| 1 | | 脲嘧啶 | | C4H4N2O2
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| 2 | 66-22-8 | 尿嘧啶 | Uracil | C4H4N2O2
| 嘧啶;核苷酸;嘧啶类;杂环类;有机酸;标准品;对照品;中间体;核苷类;生物碱 | 医药中间体 |
| 3 | 5919-26-6 | 2-硝基-1H-吡咯 | NSC 87241 | C4H4N2O2
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| 4 | 5522-55-4 | 尿嘧啶-15N2 | URACIL-15N2 | C4H4N2O2
| | |
| 5 | 5930-94-9 | 3-硝基吡咯 | 3-Nitropyrrole | C4H4N2O2
| 吡咯类;氮杂环;化学连接;医药中间体 | |
| 6 | 35803-45-3 | 尿嘧啶-2-13C | 尿嘧啶-2-13C | C4H4N2O2
| | |
| 7 | 543-21-5 | 乙炔二羰酰胺 | but-2-ynediamide | C4H4N2O2
| 微生物代谢物 | |
| 8 | 181517-11-3 | 尿嘧啶-2-13C,15N2 | URACIL-2-13C,15N2 | C4H4N2O2
| | |
| 9 | 17285-29-9 | 哒嗪-3,5-二醇 | 3,5-Pyridazinediol | C4H4N2O2
| | |
| 10 | 55271-47-1 | 哒嗪-4,5-二醇 | pyridazine-4,5-diol | C4H4N2O2
| | |
| 11 | 27072-01-1 | Uracil, trimer (8CI) | Uracil, trimer (8CI) | C4H4N2O2
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| 12 | 23012-15-9 | 噁唑-4-甲酰胺 | OXAZOLE-4-CARBOXAMIDE | C4H4N2O2
| 杂环系列 | |
| 13 | 88070-44-4 | 5-嘧啶-1-氧化物 | 5-Pyrimidinol, 1-oxide | C4H4N2O2
| | |
| 14 | 1193-24-4 | 4,6-二羟基嘧啶 | 4,6-Dihydroxypyrimidine | C4H4N2O2
| 嘧啶;原料;嘧啶类;通用试剂;医药原料;杂环砌块;化工原料;医药中间体;杂环化合物;化工中间体 | 医药 |
| 15 | 51953-14-1 | 2,4-Pyrimidinediol (9CI) | 2,4-Pyrimidinediol (9CI) | C4H4N2O2
| | |
| 16 | 37718-11-9 | 1H-吡唑-4-甲酸 | 4-pyrazolecarboxylic acid | C4H4N2O2
| 吡唑;吡唑类;中间体;杂环砌块;通用试剂;化工原料;白色结晶;杂环化合物;化工中间体;羧酸类衍生物 | |
| 17 | 1072-84-0 | 1H-咪唑-4-甲酸 | 4-imidazolecarboxylic acid | C4H4N2O2
| 咪唑;咪唑类;通用试剂;咪唑系列;杂环砌块;有机合成;化工原料;医药中间体;杂环化合物;杂志中间体化合物定制 | |
| 18 | 58978-32-8 | 1H-imidazolecarboxylic acid | 1H-imidazolecarboxylic acid | C4H4N2O2
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| 19 | 1822936-00-4 | 5-羟基-4(1H)-嘧啶酮 | 5-Hydroxypyrimidin-4(5H)-one | C4H4N2O2
| | |
| 20 | 1621-91-6 | 1H-吡唑-3-羧酸 | 1H-Pyrazole-3-Carboxylic Acid | C4H4N2O2
| 吡唑;中间体;吡唑类;吡唑系列;杂环化合物;医药中间体;化工中间体;酸类及衍生物 | |
| 21 | 16042-25-4 | 咪唑-2-甲酸 | 1H-Imidazole-2-carboxylic acid | C4H4N2O2
| 合成;咪唑;咪唑类;医药中间体;杂质对照品 | |
| 22 | 884539-45-1 | 恶唑-2-甲酰胺 | OXAZOLE-2-CARBOXYLIC ACID AMIDE | C4H4N2O2
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| 23 | 4433-22-1 | 嘧啶-2,4(1H,3H)-二酮 | 2,4(3H,5H)-Pyrimidinedione (9CI) | C4H4N2O2
| | |
| 24 | 207913-19-7 | Isoxazole-4-carboxylic acid amide | Isoxazole-4-carboxylic acid amide | C4H4N2O2
| | |
| 25 | 7673-65-6 | 5-亚甲基咪唑烷-2,4-二酮 | 5-METHYLENEIMIDAZOLIDINE-2,4-DIONE | C4H4N2O2
| | |
| 26 | 5231-89-0 | 3,4-二氨基-3-环丁烯-1,2-二酮 | 3,4-DIAMINOCYCLOBUT-3-ENE-1,2-DIONE | C4H4N2O2
| 方酸类;其他原料;有机原料-酮 | |
| 27 | 15837-41-9 | 5-羟基-4(1H)-嘧啶酮 | 5-Hydroxy-1,4-dihydropyrimidin-4-one | C4H4N2O2
| 医药中间体 | |
| 28 | 202212-00-8 | 1-羟基-1H-咪唑 -2-甲醛 | 1-hydroxy-1H-imidazole-2-carbaldehyde | C4H4N2O2
| | |
| 29 | | 1,2,3,4-tetrahydropyrimidine-2,4-dione | 1,2,3,4-tetrahydropyrimidine-2,4-dione | C4H4N2O2
| | |
| 30 | 28806-15-7 | 2,4(1H,3H)-Pyrimidinedione, dimer (9CI) | 2,4(1H,3H)-Pyrimidinedione, dimer (9CI) | C4H4N2O2
| | |
| 31 | 164024-09-3 | 5-甲基-1,3,4-恶二唑-2-甲醛 | 5-Methyl-1,3,4-oxadiazole-2-carbaldehyde | C4H4N2O2
| | |
| 32 | 185445-01-6 | 1-(1,2,4-恶二唑-5-基)乙酮 | Ethanone, 1-(1,2,4-oxadiazol-5-yl)- (9CI) | C4H4N2O2
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| 33 | | 4-METHYL-1,2,5-OXADIAZOLE-3-CARBOXALDEHYDE | 4-METHYL-1,2,5-OXADIAZOLE-3-CARBOXALDEHYDE | C4H4N2O2
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| 34 | 69316-38-7 | 2-肟基-3-氧代丁腈 | Butanenitrile, 2-(hydroxyimino)-3-oxo- (9CI) | C4H4N2O2
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| 35 | | 2-Oxo-2,3-dihydro-1H-imidazole-4-carbaldehyde | 2-Oxo-2,3-dihydro-1H-imidazole-4-carbaldehyde | C4H4N2O2
| | |
| 36 | 72864-28-9 | 2,3-Dihydro-2-oxo-1H-imidazol-4-carboxaldehyde | 2,3-Dihydro-2-oxo-1H-imidazol-4-carboxaldehyde | C4H4N2O2
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| 37 | 16908-84-2 | 2,4(1H,3H)-Pyrimidinedione, labeled with tritium | 2,4(1H,3H)-Pyrimidinedione, labeled with tritium | C4H4N2O2
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| 38 | 90507-35-0 | 4-甲基-1,2,5-二唑-3-甲醛 | 1,2,5-Oxadiazole-3-carboxaldehyde, 4-methyl- (9CI) | C4H4N2O2
| | |
| 39 | 99571-91-2 | 4(1H)-Pyrimidinone, 6-hydroxy-, radical ion(1-) (9CI) | 4(1H)-Pyrimidinone, 6-hydroxy-, radical ion(1-) (9CI) | C4H4N2O2
| | |
| 40 | 198505-18-9 | 2,4(1H,3H)-Pyrimidinedione, radical ion(1-), dimer (9CI) | 2,4(1H,3H)-Pyrimidinedione, radical ion(1-), dimer (9CI) | C4H4N2O2
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