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. Application In Synthesis of 109-12-6.
Rai, Sunil K.;Baidya, Debjani;Nangia, Ashwini K. research published 《 Salts, solvates and hydrates of the multi-kinase inhibitor drug pazopanib with hydroxybenzoic acids》, the research content is summarized as follows. The marketed formulation of pazopanib (PAZ) suffers from low and variable bioavailability because of its poor dissolution rate and photostability issues. The drug falls under Biopharmaceutics Classification System (BCS) class II of low solubility and good permeability. The hydrogen bonds and supramol. interactions in crystalline forms of PAZ with hydroxybenzoic acids (HBAs) and dihydroxybenzoic acids (DHBAs), as well as its salts are analyzed. Ten X-ray crystal structures of PAZ which include the reference drug, a THF solvate (PAZ·THF) and eight salts with HBAs/DHBAs are reported. There is proton transfer from the carboxylic group of the coformer acid to the most basic nitrogen atom of the 2-aminopyrimidine ring of PAZ in all cases. Two salts were crystallized in neat form, while the remaining six are solvates and hydrates. The crystal structure of PAZ is stabilized by sulfonamide and 2-aminopyrimidine homosynthons of N-H···O and N-H···N hydrogen bonds in an R22(8) ring motif. PAZ·HBA/DHBA salts consistently contain the aminopyridinium···carboxylate N+-H···O- synthon of the R22(8) ring. The sulfonamide homosynthon of PAZ is disrupted in preference to the formation of N-H···O and N-H···N hydrogen bonds in salt structures. The presence of an addnl. basic nitrogen atom in the indazole ring of PAZ promotes hydration and solvation through the O-H···N hydrogen bond. Whereas the formation of salts is desirable for pharmaceutical formulation, the inclusion of adventitious solvent and/or water mols. with hydroxybenzoic acid coformers in the cocrystal-salt products is a limitation for this class of coformers. The stability problem faced with hydrates and solvates of PAZ·HBA/DHBA salts means that their formation must be carried out by strictly anhydrous procedures. The consistent occurrence of the aminopyridinium···carboxylate N+-H···O- ring synthon is discussed in relation to the previous results of Aakeroy, Nangia and Zaworotko groups on similar acid-base multi-component systems.
Application In Synthesis of 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., 109-12-6.
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia