Day: September 21, 2022

Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has the nitrogen atoms at positions 1 and 3 in the ring. 109-12-6, formula is C4H5N3, Name is Pyrimidin-2-amine. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives, including the nucleotides cytosine, thymine and uracil, thiamine (vitamin B1) and alloxan. Recommanded Product: Pyrimidin-2-amine.

Deng, Tianning;Mazumdar, Wrickban;Yoshinaga, Yuki;Patel, Pooja B.;Malo, Dana;Malo, Tala;Wink, Donald J.;Driver, Tom G. research published 《 Rh₂(II)-Catalyzed Intermolecular N-Aryl Aziridination of Olefins using Nonactivated N-Atom Precursors.》, the research content is summarized as follows. The development of the first intermol. Rh₂(II)-catalyzed aziridination of olefins using anilines as nonactivated N atom precursors and an iodine(III) reagent as the stoichiometric oxidant was reported. This reaction required the transfer of an N-aryl nitrene fragment from the iminoiodinane intermediate to a Rh₂(II)-carboxylate catalyst; in the absence of a catalyst only diaryldiazene formation was observed This N-aryl aziridination was general and was successfully realized using as little as 1 equiv of the olefin. Di-, tri- and tetrasubstituted cyclic- or acyclic olefins was employed as substrates and a range of aniline- and heteroarylamine N atom precursors were tolerated. The Rh₂(II)-catalyzed N atom transfer to the olefin was stereospecific, chemo- and diastereoselective to produce the N-aryl aziridine as the only amination product. Because the chem. of nonactivated N-aryl aziridines was underexplored, the reactivity of N-aryl aziridines was explored toward a range of nucleophiles to stereoselectively access privileged 1,2 stereodiads unavailable from epoxides, and removal of the N-2,4-dinitrophenyl group was demonstrated to show that functionalized primary amines was constructed.

109-12-6, 2-Aminopyrimidine is a useful research compound. Its molecular formula is C4H5N3 and its molecular weight is 95.1 g/mol. The purity is usually 95%.
2-Aminopyrimidine is an organic compound that belongs to the group of pyridines. It has been shown to have antimicrobial, antitumor, and antiviral properties. 2-Aminopyrimidine has been used as a fungicide and herbicide in horticulture and agriculture, respectively. The molecular geometry of this molecule is octahedral with coordination geometry C2v. This chemical binds to the BCR-ABL kinase receptor and inhibits its activity by competitive inhibition of ATP binding. 2-Aminopyrimidine has been shown to have a hematologic response in vivo models and in vitro assays. It also has anti-inflammatory effects when it is taken orally or applied topically., Recommanded Product: Pyrimidin-2-amine

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The systematic study of pyrimidines began in 1884 with Pinner, who synthesized derivatives by condensing ethyl acetoacetate with amidines. Pinner first proposed the name “pyrimidin” in 1885. 554-01-8, formula is C5H7N3O, Name is 4-Amino-5-methylpyrimidin-2(1H)-one. The parent compound was first prepared by Gabriel and Colman in 1900, by conversion of barbituric acid to 2,4,6-trichloropyrimidine followed by reduction using zinc dust in hot water. Category: pyrimidines.

Delaunay, Sylvain;Pascual, Gloria;Feng, Bohai;Klann, Kevin;Behm, Mikaela;Hotz-Wagenblatt, Agnes;Richter, Karsten;Zaoui, Karim;Herpel, Esther;Muench, Christian;Dietmann, Sabine;Hess, Jochen;Benitah, Salvador Aznar;Frye, Michaela research published 《 Mitochondrial RNA modifications shape metabolic plasticity in metastasis》, the research content is summarized as follows. Abstract: Aggressive and metastatic cancers show enhanced metabolic plasticity¹, but the precise underlying mechanisms of this remain unclear. Here we show how two NOP2/Sun RNA methyltransferase 3 (NSUN3)-dependent RNA modifications-5-methylcytosine (m⁵C) and its derivative 5-formylcytosine (f⁵C) (references^2-4)-drive the translation of mitochondrial mRNA to power metastasis. Translation of mitochondrially encoded subunits of the oxidative phosphorylation complex depends on the formation of m⁵C at position 34 in mitochondrial tRNA^Met. m⁵C-deficient human oral cancer cells exhibit increased levels of glycolysis and changes in their mitochondrial function that do not affect cell viability or primary tumor growth in vivo; however, metabolic plasticity is severely impaired as mitochondrial m⁵C-deficient tumors do not metastasize efficiently. We discovered that CD36-dependent non-dividing, metastasis-initiating tumor cells require mitochondrial m⁵C to activate invasion and dissemination. Moreover, a mitochondria-driven gene signature in patients with head and neck cancer is predictive for metastasis and disease progression. Finally, we confirm that this metabolic switch that allows the metastasis of tumor cells can be pharmacol. targeted through the inhibition of mitochondrial mRNA translation in vivo. Together, our results reveal that site-specific mitochondrial RNA modifications could be therapeutic targets to combat metastasis.

Category: pyrimidines, 5-Methylcytosine is a methylated form of the nucleobase cytosine occurring predominantly in cytosine-phosphate-guanine (CpG) islands that are produced by DNA methyltransferases and may regulate gene expression. Like cytosine, the DNA sequence containing 5-methylcytosine (5-mC) is able to be replicated without error and 5-mC can pair with guanine in double stranded DNA. However, DNA sequences containing a high local concentration of 5-mC may be less transcriptionally active than areas with higher ratios of unmodified cytosine.
5-Methylcytosine belongs to the class of organic compounds known as hydroxypyrimidines. These are organic compounds containing a hydroxyl group attached to a pyrimidine ring. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions. 5-Methylcytosine exists as a solid, slightly soluble (in water), and a very weakly acidic compound (based on its pKa). Within the cell, 5-methylcytosine is primarily located in the cytoplasm. 5-Methylcytosine can be biosynthesized from cytosine. Outside of the human body, 5-methylcytosine can be found in tea. This makes 5-methylcytosine a potential biomarker for the consumption of this food product.
5-methylcytosine is a pyrimidine that is a derivative of cytosine, having a methyl group at the 5-position. It has a role as a human metabolite. It is a member of pyrimidines and a methylcytosine. It derives from a cytosine.
5-Methylcytosine is a nucleic acid that is found in the DNA and RNA of the cell. It is an important component of methylation, which is the process by which a methyl group is added to a molecule. This process can lead to cellular transformation, a process that can cause cancer. 5-Methylcytosine has also been shown as a molecular pathogenesis factor in infectious diseases such as HIV and herpes simplex virus type 1. The presence of 5-methylcytosine in nuclear DNA has been detected by analytical techniques such as gas chromatography/mass spectrometry (GC/MS). There are many analytical methods, including GC/MS, that can be used to detect 5-methylcytosine in cellular nuclei., 554-01-8.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives, including the nucleotides cytosine, thymine and uracil, thiamine (vitamin B1) and alloxan. 109-12-6, formula is C4H5N3, Name is Pyrimidin-2-amine. It is also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. Quality Control of 109-12-6.

Decker, Ann M.;Brackeen, Marcus F.;Mohammadkhani, Aida;Kormos, Chad M.;Hesk, David;Borgland, Stephanie L.;Blough, Bruce E. research published 《 Identification of a Potent Human Trace Amine-Associated Receptor 1 Antagonist》, the research content is summarized as follows. Human trace amine-associated receptor subtype 1 (hTAAR1) is a G protein-coupled receptor that has therapeutic potential for multiple diseases, including schizophrenia, drug addiction, and Parkinson’s disease (PD). Although several potent agonists have been identified and have shown pos. results in various clin. trials for schizophrenia, the discovery of potent hTAAR1 antagonists remains elusive. Herein, we report the results of structure-activity relationship studies that have led to the discovery of a potent hTAAR1 antagonist (RTI-7470-44, 34). RTI-7470-44 exhibited an IC₅₀ of 8.4 nM in an in vitro cAMP functional assay, a K_i of 0.3 nM in a radioligand binding assay, and showed species selectivity for hTAAR1 over the rat and mouse orthologues. RTI-7470-44 displayed good blood-brain barrier permeability, moderate metabolic stability, and a favorable preliminary off-target profile. Finally, RTI-7470-44 increased the spontaneous firing rate of mouse VTA dopaminergic neurons and blocked the effects of the known TAAR1 agonist RO5166017. Collectively, this work provides a promising hTAAR1 antagonist probe that can be used to study TAAR1 pharmacol. and the potential therapeutic role in hypodopaminergic diseases such as PD.

109-12-6, 2-Aminopyrimidine is a useful research compound. Its molecular formula is C4H5N3 and its molecular weight is 95.1 g/mol. The purity is usually 95%.
2-Aminopyrimidine is an organic compound that belongs to the group of pyridines. It has been shown to have antimicrobial, antitumor, and antiviral properties. 2-Aminopyrimidine has been used as a fungicide and herbicide in horticulture and agriculture, respectively. The molecular geometry of this molecule is octahedral with coordination geometry C2v. This chemical binds to the BCR-ABL kinase receptor and inhibits its activity by competitive inhibition of ATP binding. 2-Aminopyrimidine has been shown to have a hematologic response in vivo models and in vitro assays. It also has anti-inflammatory effects when it is taken orally or applied topically., Quality Control of 109-12-6

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The systematic study of pyrimidines began in 1884 with Pinner, who synthesized derivatives by condensing ethyl acetoacetate with amidines. Pinner first proposed the name “pyrimidin” in 1885. 109-12-6, formula is C4H5N3, Name is Pyrimidin-2-amine. The parent compound was first prepared by Gabriel and Colman in 1900, by conversion of barbituric acid to 2,4,6-trichloropyrimidine followed by reduction using zinc dust in hot water. Electric Literature of 109-12-6.

Dash, Sibananda G.;Thakur, Tejender S. research published 《 Computational Screening of Multicomponent Solid Forms of 2-Aryl-Propionate Class of NSAID, Zaltoprofen, and Their Experimental Validation》, the research content is summarized as follows. A rational coformer screening methodol. was adopted to identify new multicomponent solid preformulations of the 2-aryl propionate class of nonsteroidal anti-inflammatory drugs. The coformer screening was performed using a modified mol. electrostatic potential based site-pair interaction energy computations used in conjunction with the free energy of cocrystal formation calculations to attain better predictability. The computational results were validated against the available exptl. data and used for optimizing the cocrystal screening methodol. for the drug zaltoprofen. A new polymorph and three new cocrystal forms of zaltoprofen were reported in the study, which exhibits up to four times enhancement in the drug solubility than that of the marketed form. We also report one new salt and two new cocrystals of (+)-ibuprofen, a drug from the same 2-aryl propionate family. In hindsight, we propose incorporating secondary heteromeric interactions formed by homo/heterodimer in the calculations of site-pair interaction energy differences for improving the predictability of the mol. electrostatic potential (MESP) based screening. A combined coformer screening strategy utilizing an MESP site-pair interaction energy and the free energy of cocrystal formation calculations helped to develop several novel multicomponent solids of zaltoprofen.

109-12-6, 2-Aminopyrimidine is a useful research compound. Its molecular formula is C4H5N3 and its molecular weight is 95.1 g/mol. The purity is usually 95%.
2-Aminopyrimidine is an organic compound that belongs to the group of pyridines. It has been shown to have antimicrobial, antitumor, and antiviral properties. 2-Aminopyrimidine has been used as a fungicide and herbicide in horticulture and agriculture, respectively. The molecular geometry of this molecule is octahedral with coordination geometry C2v. This chemical binds to the BCR-ABL kinase receptor and inhibits its activity by competitive inhibition of ATP binding. 2-Aminopyrimidine has been shown to have a hematologic response in vivo models and in vitro assays. It also has anti-inflammatory effects when it is taken orally or applied topically., Electric Literature of 109-12-6

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The nomenclature of pyrimidines is straightforward. However, like other heterocyclics, tautomeric hydroxyl groups yield complications since they exist primarily in the cyclic amide form. 4595-59-9, formula is C4H3BrN2, Name is 5-Bromopyrimidine. For example, 2-hydroxypyrimidine is more properly named 2-pyrimidone. A partial list of trivial names of various pyrimidines exists. Electric Literature of 4595-59-9.

Das, Saikat;Murugesan, Kathiravan;Villegas Rodriguez, Gonzalo J.;Kaur, Jaspreet;Barham, Joshua P.;Savateev, Aleksandr;Antonietti, Markus;Koenig, Burkhard research published 《 Photocatalytic (Het)arylation of C(sp³)-H Bonds with Carbon Nitride》, the research content is summarized as follows. Mesoporous graphitic carbon nitride(mpg-CN)as a heterogeneous organic semiconductor photocatalyst for direct arylation of sp³ C-H bonds in combination with nickel catalysis are reported. This protocol has a broad synthetic scope (>70 examples including late-stage functionalization of drugs and agrochems.), was operationally simple, and shows high chemo- and regioselectivities. Facile separation and recycling of the mpg-CN catalyst in combination with its low preparation cost, innate photochem. stability, and low toxicity are beneficial features overcoming typical shortcomings of homogeneous photocatalysis. Detailed mechanistic investigations and kinetic studies indicate that an unprecedented energy-transfer process (EnT) from the organic semiconductor to the nickel complex was operated.

Electric Literature of 4595-59-9, 5-Bromopyrimidine is a reactive intermediate that is used in the synthesis of 4-methoxyphenylboronic acid. 5-Bromopyrimidine has been shown to be nucleophilic, reacting with β-amino acids under basic conditions to form the corresponding 2-bromo amide. It also undergoes cross-coupling reactions with halides and can be used as a building block for other organic compounds. 5-Bromopyrimidine has optical properties that are characteristic of aromatic molecules, including strong absorption bands in the ultraviolet region and visible light region.
5-Bromopyrimidine undergoes direct metallation with lithuium diisopropylamide to yield 4-lithio-5-bromopyrimidine., 4595-59-9.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The nomenclature of pyrimidines is straightforward. However, like other heterocyclics, tautomeric hydroxyl groups yield complications since they exist primarily in the cyclic amide form. 1722-12-9, formula is C4H3ClN2, Name is 2-Chloropyrimidine. For example, 2-hydroxypyrimidine is more properly named 2-pyrimidone. A partial list of trivial names of various pyrimidines exists. Recommanded Product: 2-Chloropyrimidine.

Das, Dharmendra;Bhosle, Akhil A.;Panjikar, Padmini C.;Chatterjee, Amrita;Banerjee, Mainak research published 《 Mn(I)-Catalyzed Mechanochemical C-H Bond Activation: C-2 Selective Alkenylation of Indoles》, the research content is summarized as follows. An efficient mechanochem. method for manganese-catalyzed regioselective C-H bond alkenylation of indoles with alkynes is developed. The present method allows direct C-2 alkenylation of indoles in a mixer mill, employing a com. available low-valent manganese catalyst, MnBr(CO)₅, providing a sustainable route to hydroindolation on alkynes. The developed protocol is highly C-2-selective by the presence of a heteroaromatic N atom as a directing group (namely, pyridyl) and tolerant of structural variations with electron-rich and electron-deficient substituents both in the indoles and in the alkynes. Silica as the grinding media and the presence of a catalytic amount of acid and DIPEA as the base worked favorably to afford a variety of 2-alkenyl indoles in excellent yields at ambient conditions. The terminal alkynes offered better results than internal alkynes in terms of yields and reactivity. The scalability of the reaction was demonstrated by conducting the reactions in the gram scale. A short study indicated that a little tweak in conditions can be useful for double alkenylation to afford carbazole derivatives in moderate yields. A low E-factor along with a clean reaction profile, an easy exptl. setup, the absence of an anhydrous condition, and being devoid of toxic organic solvents proclaims its advantage over the available conventional methods.

Recommanded Product: 2-Chloropyrimidine, 2-Chloropyrimidine is a monochlorinated pyrimidine with plant growth regulating activity. Chloropyrimidine is a useful reagent in the preparation of antivirals and other biologically active compounds.
2-Chloropyrimidine undergoes cobalt-catalyzed cross-coupling reaction with aryl halides.
2-Chloropyrimidine is a molecule that can be synthesized by the oxidation of pyrimidine with hydrogen peroxide and hydrochloric acid. The reaction proceeds through an electrochemical process in which the oxidation catalyst is a platinum electrode. This reaction is catalyzed by the nucleophilic attack of malonic acid on the chloropyrimidine at the methylene group. This efficient method for making 2-chloropyrimidine has been applied to synthesize aryl halides, including phenyl chloropyrimidine and pyridyl chloropyrimidine, from their corresponding chloride and bromide precursors. The fluorescence properties of 2-chloropyrimidine have been studied in coordination chemistry, where it forms complexes with metal ions such as Mn2+. In this study, it was found that adsorption mechanisms are dependent on molecular size, charge density, kinetic energy, and adsorbent surface area., 1722-12-9.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives, including the nucleotides cytosine, thymine and uracil, thiamine (vitamin B1) and alloxan. 4595-59-9, formula is C4H3BrN2, Name is 5-Bromopyrimidine. It is also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. HPLC of Formula: 4595-59-9.

da Silva Santos, Bruno Maia;dos Santos Dupim, Mariana;Paula de Souza, Caue;Cardozo, Thiago Messias;Finelli, Fernanda Gadini research published 《 DABCO-promoted photocatalytic C-H functionalization of aldehydes》, the research content is summarized as follows. A direct application of DABCO, an inexpensive and broadly accessible organic base, as a hydrogen atom transfer (HAT) abstractor in a photocatalytic strategy for aldehyde C-H activation was presented. The acyl radicals generated in this step were arylated with aryl bromides through a well stablished nickel cross-coupling methodol., leading to a variety of interesting aryl ketones in good yields. Computational calculations also performed to shine light in the HAT step energetics and determined an optimized geometry for the transition state, showing that the hydrogen atom transfer between aldehydes and DABCO was a mildly endergonic, yet sufficiently fast step. The same calculations were performed with quinuclidine, for comparison of both catalysts and the differences are discussed.

HPLC of Formula: 4595-59-9, 5-Bromopyrimidine is a reactive intermediate that is used in the synthesis of 4-methoxyphenylboronic acid. 5-Bromopyrimidine has been shown to be nucleophilic, reacting with β-amino acids under basic conditions to form the corresponding 2-bromo amide. It also undergoes cross-coupling reactions with halides and can be used as a building block for other organic compounds. 5-Bromopyrimidine has optical properties that are characteristic of aromatic molecules, including strong absorption bands in the ultraviolet region and visible light region.
5-Bromopyrimidine undergoes direct metallation with lithuium diisopropylamide to yield 4-lithio-5-bromopyrimidine., 4595-59-9.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The systematic study of pyrimidines began in 1884 with Pinner, who synthesized derivatives by condensing ethyl acetoacetate with amidines. Pinner first proposed the name “pyrimidin” in 1885. 4595-59-9, formula is C4H3BrN2, Name is 5-Bromopyrimidine. The parent compound was first prepared by Gabriel and Colman in 1900, by conversion of barbituric acid to 2,4,6-trichloropyrimidine followed by reduction using zinc dust in hot water. Safety of 5-Bromopyrimidine.

Cyr, Patrick;Joseph-Valcin, Eve-Marline;Boissarie, Patrick;Simoneau, Bruno;Marinier, Anne research published 《 Copper-Catalyzed N¹ Coupling of 3-Aminoindazoles and Related Aminoazoles with Aryl Bromides》, the research content is summarized as follows. The N¹-selective arylation of 3-aminoindazoles using copper catalysis was reported. The reaction used readily accessible aryl bromides as coupling partners, including those from heterocycles and allowed easy access to a broad variety of substituted 3-aminoindazoles. The methodol. was also examined on other aminoazoles of interest for the pharmaceutical industry.

Safety of 5-Bromopyrimidine, 5-Bromopyrimidine is a reactive intermediate that is used in the synthesis of 4-methoxyphenylboronic acid. 5-Bromopyrimidine has been shown to be nucleophilic, reacting with β-amino acids under basic conditions to form the corresponding 2-bromo amide. It also undergoes cross-coupling reactions with halides and can be used as a building block for other organic compounds. 5-Bromopyrimidine has optical properties that are characteristic of aromatic molecules, including strong absorption bands in the ultraviolet region and visible light region.
5-Bromopyrimidine undergoes direct metallation with lithuium diisopropylamide to yield 4-lithio-5-bromopyrimidine., 4595-59-9.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. 1722-12-9, formula is C4H3ClN2, Name is 2-Chloropyrimidine. In nucleic acids, three types of nucleobases are pyrimidine derivatives: cytosine (C), thymine (T), and uracil (U). Synthetic Route of 1722-12-9.

Cui, Xin-Feng;Qiao, Xin;Wang, He-Song;Huang, Guo-Sheng research published 《 Iridium(III)-Catalyzed Tandem Annulation of Pyridine-Substituted Anilines and α-Cl Ketones for Obtaining 2-Arylindoles》, the research content is summarized as follows. A facile and expeditious protocol for the synthesis of 2-arylindole compounds from readily available N-(2-pyridyl)anilines and com. available α-Cl ketones through iridium-catalyzed C-H activation and cyclization is reported here. As a complementary approach to the conventional strategies for indole synthesis, the transformation exhibits powerful reactivity, tolerates a large number of functional groups, and proceeds with good to excellent yields under mild conditions, providing a straightforward method to obtain structurally diverse and valuable indole scaffolds. Furthermore, the reaction could be easily scaled up to gram scale.

1722-12-9, 2-Chloropyrimidine is a monochlorinated pyrimidine with plant growth regulating activity. Chloropyrimidine is a useful reagent in the preparation of antivirals and other biologically active compounds.
2-Chloropyrimidine undergoes cobalt-catalyzed cross-coupling reaction with aryl halides.
2-Chloropyrimidine is a molecule that can be synthesized by the oxidation of pyrimidine with hydrogen peroxide and hydrochloric acid. The reaction proceeds through an electrochemical process in which the oxidation catalyst is a platinum electrode. This reaction is catalyzed by the nucleophilic attack of malonic acid on the chloropyrimidine at the methylene group. This efficient method for making 2-chloropyrimidine has been applied to synthesize aryl halides, including phenyl chloropyrimidine and pyridyl chloropyrimidine, from their corresponding chloride and bromide precursors. The fluorescence properties of 2-chloropyrimidine have been studied in coordination chemistry, where it forms complexes with metal ions such as Mn2+. In this study, it was found that adsorption mechanisms are dependent on molecular size, charge density, kinetic energy, and adsorbent surface area., Synthetic Route of 1722-12-9

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The systematic study of pyrimidines began in 1884 with Pinner, who synthesized derivatives by condensing ethyl acetoacetate with amidines. Pinner first proposed the name “pyrimidin” in 1885. 109-12-6, formula is C4H5N3, Name is Pyrimidin-2-amine. The parent compound was first prepared by Gabriel and Colman in 1900, by conversion of barbituric acid to 2,4,6-trichloropyrimidine followed by reduction using zinc dust in hot water. COA of Formula: C4H5N3.

Cui, Hao;Tian, Yu;Zhang, Jun;Ma, Shanshan;Li, Lipin;Zuo, Wei;Zhang, Lei;Wang, Tong research published 《 Enhanced oxidation of sulfadiazine by two-stage ultrasound assisted zero-valent iron catalyzed persulfate process: Factors and pathways》, the research content is summarized as follows. The existence of sulfonamides (SAs) in water bodies leads to a series of human health problems and environmental risks. Ultrasound (US) enhanced zero-valent iron catalyzed persulfate (ZVI/PS) process is a potential approach to eliminate SAs. However, high energy consumption and large ZVI usage limited its application. In this study, a novel two-stage US-ZVI/PS process was first proposed, which reduced 35% of ZVI usage and saved 74.2% of energy consumption compared with traditional US-ZVI/PS process. The effect of introduction time and operation mode of US on sulfadiazine (SD, 20 mg L^-1) degradation was first investigated. The intermittent operation method of US (60 s on/60 s off) could help controlling the releasing of Fe²⁺ in a reasonable range (0.37-0.56 mg L^-1), which was the key reason for the high SD degradation efficiency. SO·-4, ·OH were confirmed as the key radicals for SD removal, and four degradation pathways were proposed. The initial pH of 5.0-7.0, the initial ZVI and PS doses of 0.6 mM and 1.4 mM were determined as the optimal conditions for high SD removal efficiency. Compared to other SD removal processes (traditional US/ZVI/PS, ozonation and UV-based process), two-stage US-ZVI/PS saved 68.3-98.5% energy consumption and enhanced 0.7-14.0 times degradation rate. Therefore, two-stage US-ZVI/PS system is promising and cost-effective for the removal of SD.

COA of Formula: C4H5N3, 2-Aminopyrimidine is a useful research compound. Its molecular formula is C4H5N3 and its molecular weight is 95.1 g/mol. The purity is usually 95%.
2-Aminopyrimidine is an organic compound that belongs to the group of pyridines. It has been shown to have antimicrobial, antitumor, and antiviral properties. 2-Aminopyrimidine has been used as a fungicide and herbicide in horticulture and agriculture, respectively. The molecular geometry of this molecule is octahedral with coordination geometry C2v. This chemical binds to the BCR-ABL kinase receptor and inhibits its activity by competitive inhibition of ATP binding. 2-Aminopyrimidine has been shown to have a hematologic response in vivo models and in vitro assays. It also has anti-inflammatory effects when it is taken orally or applied topically., 109-12-6.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia