| 1 | 120-73-0 | 嘌呤 | Purine | C5H4N4
| 对照品;西地那非中间体;植物激素及核酸类;通用生化试剂-核酸;通用生化试剂-天然产物;生化试剂-植物激素及核酸类 | |
| 2 | 273-24-5 | 5H-Purine (9CI) | 5H-Purine (9CI) | C5H4N4
| | |
| 3 | 10296-29-4 | Pyridine, 3-azido- | Pyridine, 3-azido- | C5H4N4
| | |
| 4 | 13930-38-6 | 2H-Purine (8CI,9CI) | 2H-Purine (8CI,9CI) | C5H4N4
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| 5 | 272-60-6 | 4,7-二氮杂-1H-吲唑 | 4,7-DIAZA-1H-INDAZOLE | C5H4N4
| 其它 | |
| 6 | 113305-94-5 | 2-氨基-5-氰基吡嗪 | 2-AMINO-5-CYANOPYRAZINE | C5H4N4
| 杂环化合物;硼酸类,腈类,过渡金属化合物 | |
| 7 | 273-94-9 | 1H-咪唑并[4,5-b]吡嗪 | 1H-IMIDAZO[4,5-B]PYRAZINE | C5H4N4
| | |
| 8 | 273-00-7 | 1H-咪唑并[4,5-d]哒嗪 | 1H-IMIDAZO[4,5-D]PYRIDAZINE | C5H4N4
| | |
| 9 | 274-87-3 | 吡啶并[1,5-A]四氮唑 | 1,2,3,3a-Tetraaza-3aH-indene | C5H4N4
| | |
| 10 | 274-82-8 | 1,2,4-三唑并[4,3-A]吡嗪 | 1,2,4]TRIAZOLO[4,3-A]PYRAZINE | C5H4N4
| | |
| 11 | 25911-65-3 | 3-氨基吡嗪-2-甲腈 | 3-Aminopyrazine-2-carbonitrile | C5H4N4
| | |
| 12 | 4425-54-1 | 2-嘧啶基氨腈 | Cyanamide, 2-pyrimidinyl- (9CI) | C5H4N4
| | |
| 13 | 16357-69-0 | 4-氨基嘧啶-5-甲腈 | 4-AMINOPYRIMIDINE-5-CARBONITRILE | C5H4N4
| 合成;嘧啶;嘧啶类化合物 | |
| 14 | | 3H-[1,2,3]TRIAZOLO[4,5-B]PYRIDINE | 3H-[1,2,3]TRIAZOLO[4,5-B]PYRIDINE | C5H4N4
| | |
| 15 | 89282-17-7 | Cyanamide, bis(cyanomethyl)- (9CI) | Cyanamide, bis(cyanomethyl)- (9CI) | C5H4N4
| | |
| 16 | 274-68-0 | Imidazo[1,5-a]-1,3,5-triazine (9CI) | Imidazo[1,5-a]-1,3,5-triazine (9CI) | C5H4N4
| | |
| 17 | 59489-39-3 | 2-氨基-6-氰基吡嗪 | Pyrazinecarbonitrile, 6-amino- (9CI) | C5H4N4
| | |
| 18 | | [1,2,4]三唑并[4,3-A]吡嗪 | [1,2,4]Triazolo[4,3-a]pyrazine ,98.6% | C5H4N4
| | |
| 19 | 271-78-3 | 2H-Pyrazolo[3,4-d]pyrimidine (8CI,9CI) | 2H-Pyrazolo[3,4-d]pyrimidine (8CI,9CI) | C5H4N4
| | |
| 20 | 245321-46-4 | 4-氨基-2-嘧啶甲腈 | 2-Pyrimidinecarbonitrile, 4-amino- (9CI) | C5H4N4
| | |
| 21 | 272-57-1 | 1H-Pyrazolo[4,3-d]pyrimidine (6CI,8CI,9CI) | 1H-Pyrazolo[4,3-d]pyrimidine (6CI,8CI,9CI) | C5H4N4
| | |
| 22 | 40971-96-8 | (E)-3-(4H-1,2,4-三唑-3-基)丙烯腈 | 2-Propenenitrile, 3-(1H-1,2,4-triazol-3-yl)-, (E)- | C5H4N4
| | |