Zhu, Quanjing team published research in Sensors and Actuators, B: Chemical in 2022 | 554-01-8

554-01-8, 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., Safety of 4-Amino-5-methylpyrimidin-2(1H)-one

Pyrimidine is a nitrogenous base similar to benzene (a six-membered ring) and includes cytosine, thymine, and uracil as bases used for DNA or RNA. 554-01-8, formula is C5H7N3O, Name is 4-Amino-5-methylpyrimidin-2(1H)-one. Pyrimidine also found in many synthetic compounds such as barbiturates and the HIV drug, zidovudine. Safety of 4-Amino-5-methylpyrimidin-2(1H)-one.

Zhu, Quanjing;Yang, Peng;Zhu, Chuiyu;He, Yong;Fang, Lichao;Huang, Hui;Li, Chenghong;Wang, Lina;Deng, Jun;Li, Yan;Zheng, Junsong research published 《 Wavelength-resolved photoelectrochemical biosensor triggered by cascade signal amplification reactions for RNA methylation analysis on a single interface》, the research content is summarized as follows. Among RNA (RNA) methylation modifications, those of m6A and m5C are the two most abundant forms, and the bias of m6A and m5C modification levels plays an essential role in many biol. processes. Therefore, constructing a mechanism that can simultaneously analyze the two modifications would be potentially very significant. Herein, we propose a wavelength-resolved photoelectrochem. (PEC) biosensor based on cascade signal amplification reactions for m6A-RNA and m5C-RNA anal. on a single interface. First, a target sequence was transformed with antibody-functionalized magnetic beads to obtain the initial sequences, triggering the 3D DNA nanomachine to transform and amplify targets by generating many output sequences. Subsequently, the output sequences were combined with rolling-circle-amplification (RCA) primer scaffolds, and then a DNA origami structure was formed based on RCA. A DNA origami could immobilize many photoelectrochem. mediators to amplify photocurrent responses. As expected, the proposed PEC biosensor exhibited excellent anal. performances for both m6A-RNA and m5C-RNA. The detection limits were as low as 1.96 fM and 7.37 pM, resp. The successful fabrication of the PEC biosensor opened new possibilities for epigenetic research and the diagnosis and treatment of methylation-related diseases.

554-01-8, 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., Safety of 4-Amino-5-methylpyrimidin-2(1H)-one

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia