3-methylcytosine

Structural formula
General
Surname	3-methylcytosine
other names	4-imino-3-methyl-1 H -pyrimidin-2-one 4-Amino-3-methyl-pyrimidin-2-one
Molecular formula	C 5 H 7 N 3 O
External identifiers / databases
CAS number 4776-08-3 PubChem 140523 ChemSpider 123940 DrugBank DB04103 Wikidata Q15632786
properties
Molar mass	125.13 g mol −1
Physical state	firmly
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

3-methylcytosine is a heterocyclic organic compound with a pyrimidine backbone. It is a derivative of the nucleic base cytosine with an additional methyl group in position 3. It occurs as a component of the nucleoside 3-methylcytidine  (m ³ C) in the RNA .

properties

3-methylcytosine is tautomeric, with the imino form predominating.

3-methylcytosine (iminoform)	3-methylcytosine (aminoform)

Individual evidence

1. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
2. ↑ M. Dreyfus, O. Bensaude, G. Dodin, JE Dubois: “Tautomerism in Cytosine and 3-Methylcytosine. A Thermodynamic and Kinetic Study ", J. Am. Chem. Soc. , 1976 , 98  (20), pp. 6338-6349 ( doi : 10.1021 / ja00436a045 ; PMID 965648 ).

Web links

• Entry for 3-Methylcytosine in the Human Metabolome Database (HMDB) , accessed September 27, 2013.