guanine 151.049 151.126 2-Amino-6-hydroxypurine 2-amino-1,9-dihydro-6H-purin-6-one 2-amino-6-oxopurine A 2-aminopurine carrying a 6-oxo substituent. Beilstein:147911 C12=C(N=C(NC1=O)N)NC=N2 C5H5N5O CAS:73-40-5 CHEBI:14371 CHEBI:14372 CHEBI:16235 CHEBI:24443 CHEBI:42948 CHEBI:5563 DrugBank:DB02377 G GUANINE Gmelin:431879 Gua Guanine HMDB:HMDB0000132 InChI=1S/C5H5N5O/c6-5-9-3-2(4(11)10-5)7-1-8-3/h1H,(H4,6,7,8,9,10,11) KEGG:C00242 KNApSAcK:C00001501 MetaCyc:GUANINE PDBeChem:GUN PMID:22770225 PMID:8070089 Reaxys:147911 UYTPUPDQBNUYGX-UHFFFAOYSA-N Wikipedia:Guanine chebi_ontology guanine 2-aminopurines oxopurine purine nucleobase