Products
| Rank | Product Name | CAS No. |
| 21 | 2,5-dichloro-pyrimidine | 22536-67-0 |
| 22 | 2-Amino-4,6-dichloro-5-formylpyrimidine | 5604-46-6 |
| 23 | 5-Bromo-2-hydroxypyrimidine | 38353-06-9 |
| 24 | 2,4-Dibromopyrimidine | 3921-01-5. |
| 25 | 4,6-di(2'-pyridyl)pyrimidine | |
| 26 | 2,4-Dichloropyrimidine | 3934-20-1 |
| 27 | Uracil | 66-22-8 |
| 28 | 4,6-Dihydroxy-2-methylpyrimidine | 40497-30-1 |
| 29 | 2,4-Diamino-6-hydroxypyrimidine | 56-06-4 |
| 30 | 5-Nitro uracil | 611-08-5 |