| 1 | 4425-56-3 | 5-氰基尿嘧啶 | 5-Cyanouracil | C5H3N3O2
| 其他类材料;杂环化合物 | |
| 2 | 56473-96-2 | 3-azido-2-furaldehyde | 3-azido-2-furaldehyde | C5H3N3O2
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| 3 | | FURAN-2-CARBONYL AZIDE | FURAN-2-CARBONYL AZIDE | C5H3N3O2
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| 4 | 500787-44-0 | Pyridine, 2,3-dinitroso- (9CI) | Pyridine, 2,3-dinitroso- (9CI) | C5H3N3O2
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| 5 | 67903-53-1 | 5-nitro-1H-pyrrole-2-carbonitrile | 5-nitro-1H-pyrrole-2-carbonitrile | C5H3N3O2
| | |
| 6 | 27433-54-1 | Oxazolo[5,4-d]pyrimidin-7-ol (8CI) | Oxazolo[5,4-d]pyrimidin-7-ol (8CI) | C5H3N3O2
| | |
| 7 | 59027-78-0 | 4-硝基-1H-吡咯-2-甲腈 | 1H-Pyrrole-2-carbonitrile, 4-nitro- | C5H3N3O2
| | |
| 8 | 1187361-13-2 | 3-氰基-1H-吡唑-5-羧酸 | 3-Cyano-1H-pyrazole-5-carboxylic acid | C5H3N3O2
| 咪唑,吡唑等衍生物 | |
| 9 | 56745-98-3 | 4-氰基-1H-咪唑-5-羧酸 | 4-cyano-1H-Imidazole-5-carboxylic acid | C5H3N3O2
| | |
| 10 | 1045733-76-3 | 4-氰基-1H-吡唑-3-羧酸 | 1H-Pyrazole-3-carboxylic acid, 4-cyano- | C5H3N3O2
| | |
| 11 | 27808-52-2 | [1,2,5]Oxadiazolo[3,4-b]pyridine 1-oxide | [1,2,5]Oxadiazolo[3,4-b]pyridine 1-oxide | C5H3N3O2
| | |
| 12 | 27808-53-3 | [1,2,5]OXADIAZOLO[3,4-B]PYRIDINE, 3-OXIDE | [1,2,5]OXADIAZOLO[3,4-B]PYRIDINE, 3-OXIDE | C5H3N3O2
| | |
| 13 | 102934-53-2 | [1,2,5]Oxadiazolo[3,4-c]pyridine,1-oxide(9CI) | [1,2,5]Oxadiazolo[3,4-c]pyridine,1-oxide(9CI) | C5H3N3O2
| | |
| 14 | 79457-91-3 | 4-Pyrimidinecarbonitrile, 1,2,3,6-tetrahydro-2,6-dioxo- (9CI) | 4-Pyrimidinecarbonitrile, 1,2,3,6-tetrahydro-2,6-dioxo- (9CI) | C5H3N3O2
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