| 序号 | 产品名称 | 英文名称 | CAS No. |
| 41 | 3-溴-2-吡啶羧酸 | 3-bromopyridine-2-carboxylic acid | 30683-23-9 |
| 42 | 2-氯-3-吡啶甲醛 | 2-Chloro-3-pyridinecarboxaldehyde | 36404-88-3 |
| 43 | 4-氨基-2-羟基吡啶 | 4-Aminopyridin-2-ol | 38767-72-5 |
| 44 | 1-甲基-1H-咪唑-5-甲酸 | 1-methyl-1h-imidazole-5-carboxylic acid | 41806-40-0 |
| 45 | 2-氨基-3-硝基吡啶 | 2-Amino-3-nitropyridine | 4214-75-9 |
| 46 | 2-氯-3-吡啶甲醇 | (2-Chloro-3-pyridinyl)methanol | 42330-59-6 |
| 47 | 2,4-二氯-5 硝基嘧啶 | 2,4-dichloro-5-nitropyrimidine | 49845-33-2 |
| 48 | 2,4,6-三氯-5-嘧啶甲醛 | 2,4,6-trichloro-5-pyrimidinecarboxaldehyde | 50270-27-4 |
| 49 | 吲哚-6-甲酸甲酯 | Methyl indole-6-carboxylate | 50820-65-0 |
| 50 | 2,4-二硝基咪唑 | 2,4-Dinitroimidazole | 5213-49-0 |
| 51 | 2-氨基烟酸 | 2-Aminonicotinic acid | 5345-47-1 |
| 52 | 5-溴-2-氯吡啶 | 5-Bromo-2-chloropyridine | 53939-30-3 |
| 53 | 4,6-二氯-5-氨基嘧啶 | 5-Amino-4,6-dichloropyrimidine | 5413-85-4 |
| 54 | 2-溴-5-三氟甲基吡啶 | 2-bromo-5-(trifluoromethyl)pyridine | 50488-42-1 |
| 55 | 2-氨基-5-氰基吡啶 | 2-Amino-5-cyanopyridine | 4214-73-7 |
| 56 | 2-氯烟酸 | 2-Chloronicotinic acid | 2942-59-8 |
| 57 | 2,6-二氯-4-硝基吡啶 | 2,6-dichloro-4-nitropyridine | 25194-01-8 |
| 58 | 2-甲基-5-嘧啶甲酸乙酯 | Ethyl 2-methyl-5-pyrimidinecarboxylate | 2134-38-5 |
| 59 | 2,6-二氨基-3,5-二氟吡啶 | 3,5-Difluoropyridine-2,6-diamine | 247069-27-8 |
| 60 | 2-巯基嘧啶 | 2-Mercaptopyrimidine | 1450-85-7 |
| 61 | 2-氰基-4-吡啶羧酸甲酯 | methyl 2-cyanoisonicotinate | 94413-64-6 |