has role has role cytosine Cyt 4-aminopyrimidin-2(1H)-one OPTASPLRGRRNAP-UHFFFAOYSA-N PDBeChem:CYT CHEBI:41732 CHEBI:16040 0 Beilstein:2637 PMID:22770225 CHEBI:14066 KNApSAcK:C00001498 PMID:14253484 MetaCyc:CYTOSINE 4-amino-2(1H)-pyrimidinone 111.04326 KEGG:C00380 HMDB:HMDB0000630 InChI=1S/C4H5N3O/c5-3-1-2-6-4(8)7-3/h1-2H,(H3,5,6,7,8) Zytosin An aminopyrimidine that is pyrimidin-2-one having the amino group located at position 4. C4H5N3O Wikipedia:Cytosine cytosine C Cytosin Cytosine CHEBI:4072 Gmelin:82472 Nc1cc[nH]c(=O)n1 CHEBI:23531 CAS:71-30-7 111.10212 4-amino-2-hydroxypyrimidine Reaxys:2637 PMID:7877593 chebi_ontology pyrimidine nucleobase pyrimidone aminopyrimidine mouse metabolite Saccharomyces cerevisiae metabolite Escherichia coli metabolite human metabolite