| CAS登錄號 | 中文名 | 英文名 | 分子結構式 | 分子式 | 詳情 | 供應商 |
| 66-22-8 | 尿嘧啶; 2,4(1H,3H)-嘧啶二酮 | Uracil; 2,4(1H,3H)-Pyrimidinedione; 2,4-Dihydroxypyrimidine |  | C4H4N2O2 | 詳情 | 供應商 |
| 123-33-1 | 順丁烯二酰肼; 馬來酰肼; 1,2-二氫-3,6-噠嗪二酮; 青鮮素 | 3,6-Dihydroxypyridazine; 3,6-Pyridazinediol; Maleic acid hydrazide; Maleic hydrazide |  | C4H4N2O2 | 詳情 | 供應商 |
| 1072-84-0 | 1H-咪唑-4-甲酸 | 1H-Imidazole-4-carboxylic acid; 1H-Imidazole-4-carboxylicacid (9CI); Imidazole-4(or 5)-carboxylic acid (6CI,7CI); Imidazole-4-carboxylicacid (8CI); 4-Carboxyimidazole; Imidazole-5-carboxylic acid; NSC 32340 |  | C4H4N2O2 | 詳情 | 供應商 |
| 1193-24-4 | 4,6-二羥基嘧啶 | 4,6-Dihydroxypyrimidine; 4,6-Pyrimidinediol; 6-Hydroxy-1H-pyrimidin-4-one |  | C4H4N2O2 | 詳情 | 供應商 |
| 1621-91-6 | 吡唑-3-甲酸 | 5-Pyrazolecarboxylic acid; Pyrazole-3-carboxylic acid |  | C4H4N2O2 | 詳情 | 供應商 |
| 15837-41-9 | 5-羥基-4(1H)-嘧啶酮; 5-羥基-1,4-二氫嘧啶-4-酮 | 5-Hydroxy-1,4-dihydropyrimidin-4-one; 5-Hydroxy-4(1H)-pyrimidinone |  | C4H4N2O2 | 詳情 | 供應商 |
| 16042-25-4 | 咪唑-2-甲酸; 1H-咪唑-2-羧酸 | 1H-Imidazole-2-carboxylic acid; Imidazole-2-carboxylicacid (8CI); 2-Imidazocarboxylic acid |  | C4H4N2O2 | 詳情 | 供應商 |
| 2423-84-9 | N,N-二氧化吡嗪; N,N-二氧化吡嗪; | Pyrazine, 1,4-dioxide; Pyrazinedioxide (6CI); Pyrazine N,N'-dioxide; Pyrazine di-N-oxide |  | C4H4N2O2 | 詳情 | 供應商 |
| 37718-11-9 | 1H-吡唑-4-甲酸 | 1H-Pyrazole-4-carboxylic acid; Pyrazole-4-carboxylicacid (6CI,7CI); 4-Carboxypyrazole |  | C4H4N2O2 | 詳情 | 供應商 |
| 5930-94-9 | 3-硝基吡咯 | 1H-Pyrrole, 3-nitro-; Pyrrole,3-nitro- (7CI,8CI); 3-Nitropyrrole |  | C4H4N2O2 | 詳情 | 供應商 |
| 58978-32-8 | 1H-Imidazolecarboxylicacid; 1H-imidazolecarboxylic acid |  | C4H4N2O2 | 詳情 | 供應商 | |
| 27072-01-1 | Uracil, trimer (8CI); Uracil, trimer (8CI) |  | C4H4N2O2 | 詳情 | 供應商 | |
| 18324-22-6 | Uracil, dimer, syn-(8CI); Uracil, dimer, syn- (8CI) |  | C4H4N2O2 | 詳情 | 供應商 | |
| 797027-83-9 | 1H-Pyrazole-3-carboxylicacid; Pyrazole-3(or5)-carboxylic acid (6CI,7CI); Pyrazole-3-carboxylic acid (8CI); 1H-Pyrazole-5-carboxylic acid; 3-Carboxypyrazole; Pyrazole-3(5)-carboxylic acid |  | C4H4N2O2 | 詳情 | 供應商 | |
| 164024-09-3 | 1,3,4-Oxadiazole-2-carboxaldehyde,5-methyl-; 1,3,4-Oxadiazole-2-carboxaldehyde, 5-methyl- (9CI) |  | C4H4N2O2 | 詳情 | 供應商 | |
| 37770-94-8 | 1H-Pyrrole-2,5-dione,1-amino-; N-Aminomaleimide |  | C4H4N2O2 | 詳情 | 供應商 | |
| 72864-28-9 | 1H-Imidazole-4-carboxaldehyde,2,3-dihydro-2-oxo-; 2,3-Dihydro-2-oxo-1H-imidazol-4-carboxaldehyde |  | C4H4N2O2 | 詳情 | 供應商 | |
| 90507-35-0 | 1,2,5-Oxadiazole-3-carboxaldehyde,4-methyl-; Furazancarboxaldehyde,methyl-; 4-Methyl-1,2,5-oxadiazole-3-carboxaldehyde |  | C4H4N2O2 | 詳情 | 供應商 | |
| 543-21-5 | 乙炔二羰酰胺 | 2-Butynediamide; Acetylenedicarboxamide(6CI,7CI,8CI); Acetylene diamide; Acetylenedicarboxylic acid diamide; Aquamycin; Cellocidin; Lenamycin; NSC 38643; NSC 65381 |  | C4H4N2O2 | 詳情 | 供應商 |
| 16908-84-2 | 2,4(1H,3H)-Pyrimidinedione,labeled with tritium; Uracil,labeled with tritium (8CI) |  | C4H4N2O2 | 詳情 | 供應商 | |