4-amino-3H-pyrimidin-2-one 71-30-7 118511-36-7 14987-28-1 26661-23-4 504-05-2 66322-75-6 AIDS-023056 AIDS023056 NCI60_012445 InChI=1/C4H5N3O/c5-3-1-2-6-4(8)7-3/h1-2H,(H3,5,6,7,8 AI3-52281 CYTOSINE NSC 27787 2(1H)-Pyrimidinone, 4-amino- (9CI) 4-amino-2-oxo-1,2-dihydropyrimidine EINECS 200-749-5 30430_FLUKA 4-aminopyrimidin-2(1H)-one CHEBI:16040 Cytosin Zytosin 2(1H)-Pyrimidinone, 4-amino- 4-Amino-2(1H)-pyrimidinone 4-Amino-2-hydroxypyrimidine Cyt Cytosinimine NSC27787 2(1H)-pyrimidinone, 6-amino- 4-amino-2-pyrimidinol Cytosine (8CI) C3506_SIGMA C00380 ZINC00895210