| 1 | 59643-91-3 | Imexon | Imexon | C4H5N3O
| | |
| 2 | 71-30-7 | 胞嘧啶 | Cytosine | C4H5N3O
| 嘧啶;原料;对照品;标准品;核苷酸;中间体;原料药;有机试;生化试剂;核苷酸类 | 医药 |
| 3 | 108-53-2 | 异胞嘧啶 | isocytosine | C4H5N3O
| 核苷;碱基;嘧啶;嘧啶类;生化试剂;核苷，核苷酸，寡核苷酸;抗病毒，抗肿瘤药物中间体 | |
| 4 | 52659-21-9 | CYTOSINE-2-14C | CYTOSINE-2-14C | C4H5N3O
| | |
| 5 | | CYTOSINE (2-13C) | CYTOSINE (2-13C) | C4H5N3O
| | |
| 6 | 1216616-31-7 | Cytosine-13C,15N2 | Cytosine-13C,15N2 | C4H5N3O
| | |
| 7 | | CYTOSINE, [2-14C]- | CYTOSINE, [2-14C]- | C4H5N3O
| | |
| 8 | 43029-19-2 | 2-氨基-3-羟基吡嗪 | 3-Aminopyrazin-2-ol | C4H5N3O
| | |
| 9 | 143489-45-6 | 2-氨基-5-羟基嘧啶 | 2-aminopyrimidin-5-ol | C4H5N3O
| 嘧啶;嘧啶类;杂环系列;有机化学;通用试剂;杂环砌块;医药中间体 | |
| 10 | 33064-36-7 | 吡唑-3-甲酰胺 | Pyrazole-3-carboxamide | C4H5N3O
| 咪唑;杂环砌块;通用试剂;吡唑系列 | |
| 11 | 26832-08-6 | 咪唑-4-甲酰胺 | imidazole-4-carboxamide | C4H5N3O
| | |
| 12 | | 2-AMINO-4(3H)-PYRIMIDONE | 2-AMINO-4(3H)-PYRIMIDONE | C4H5N3O
| | |
| 13 | 16093-82-6 | 咪唑-2-甲酰胺 | 1H-Imidazol-2-carboxamide | C4H5N3O
| 有机原料;氨基化合物 | |
| 14 | 89033-30-7 | 5-氨基哒嗪-3-酮 | 5-Amino-3(2H)-pyridazinone | C4H5N3O
| | |
| 15 | 1193-22-2 | 4-氨基-6-羟基嘧啶 | 4-Amino-6-hydroxypyrimidine | C4H5N3O
| 嘧啶;嘧啶类;化学连接;其他原料;油及中间体;医药中间体;嘧啶衍生物 | |
| 16 | 3816-85-1 | N-(1H-pyrazol-3-yl)formamide | N-(1H-pyrazol-3-yl)formamide | C4H5N3O
| | |
| 17 | 100643-25-2 | 2-氨基-4-羟基嘧啶 | 4-Pyrimidinol, 2-amino- (9CI) | C4H5N3O
| | |
| 18 | 101257-36-7 | 2(1H)-Pyrazinone,6-amino-(9CI) | 2(1H)-Pyrazinone,6-amino-(9CI) | C4H5N3O
| | |
| 19 | 126382-48-7 | 2(1H)-Pyrimidinone, oxime (9CI) | 2(1H)-Pyrimidinone, oxime (9CI) | C4H5N3O
| | |
| 20 | 25015-75-2 | 4(1H)-Pyridazinone,3-amino-(8CI) | 4(1H)-Pyridazinone,3-amino-(8CI) | C4H5N3O
| | |
| 21 | 52601-89-5 | 4 - 氨基嘧啶 - 5 - 醇 | 5-Pyrimidinol, 4-amino- (7CI,9CI) | C4H5N3O
| | |
| 22 | 19921-43-8 | Urea, [(1Z)-2-cyanoethenyl]- (9CI) | Urea, [(1Z)-2-cyanoethenyl]- (9CI) | C4H5N3O
| | |
| 23 | 127020-07-9 | 1H-IMIDAZOLE-2-CARBOXALDEHYDE OXIME | 1H-IMIDAZOLE-2-CARBOXALDEHYDE OXIME | C4H5N3O
| | |
| 24 | 55271-46-0 | 4-氨基-3(2H)-哒嗪 | 3(2H)-Pyridazinone,4-amino-(6CI,9CI) | C4H5N3O
| 其它 | |
| 25 | 20139-07-5 | 1,2,4-Oxadiazole,5-amino-3-vinyl-(8CI) | 1,2,4-Oxadiazole,5-amino-3-vinyl-(8CI) | C4H5N3O
| | |
| 26 | 30192-58-6 | 1H-Pyrazole-3-carboxaldehyde,oxime(9CI) | 1H-Pyrazole-3-carboxaldehyde,oxime(9CI) | C4H5N3O
| | |
| 27 | 57041-95-9 | 6-氨基-3-羟基哒嗪 | 3(2H)-Pyridazinone,6-amino-(6CI,7CI,9CI) | C4H5N3O
| | |
| 28 | 56804-98-9 | 3-甲基-1H-1,2,4-三唑-5-甲醛 | 5-Methyl-1H-1,2,4-triazole-3-carbaldehyde | C4H5N3O
| | |
| 29 | 177084-87-6 | Ethanone, 1-(1H-1,2,3-triazol-4-yl)- (9CI) | Ethanone, 1-(1H-1,2,3-triazol-4-yl)- (9CI) | C4H5N3O
| | |
| 30 | 1211528-04-9 | 1,2-oxazole-3-carboximidamide hydrochloride | 1,2-oxazole-3-carboximidamide hydrochloride | C4H5N3O
| | |
| 31 | 15625-88-4 | (6CI,7CI,8CI,9CI)-1-乙酰基-1H-1,2,4-噻唑 | 1H-1,2,4-Triazole,1-acetyl-(6CI,7CI,8CI,9CI) | C4H5N3O
| | |
| 32 | 155831-94-0 | 4(1H)-Pyrimidinone, 2,3-dihydro-2-imino- (9CI) | 4(1H)-Pyrimidinone, 2,3-dihydro-2-imino- (9CI) | C4H5N3O
| | |
| 33 | 134434-39-2 | 2-Pyrimidinol, 1,4-dihydro-4-imino-, (Z)- (9CI) | 2-Pyrimidinol, 1,4-dihydro-4-imino-, (Z)- (9CI) | C4H5N3O
| | |
| 34 | 107646-83-3 | 2(1H)-Pyrimidinone, 3,4-dihydro-4-imino-, (E)- (9CI) | 2(1H)-Pyrimidinone, 3,4-dihydro-4-imino-, (E)- (9CI) | C4H5N3O
| | |
| 35 | 131059-68-2 | 2H-Imidazol-2-one,4-amino-1,5-dihydro-5-methylene-(9CI) | 2H-Imidazol-2-one,4-amino-1,5-dihydro-5-methylene-(9CI) | C4H5N3O
| | |