| No. | Name | Catagory | CAS NO. | 
| 21 | 2,5-Dimethoxytetrahydrofuran | Pharmaceutical Intermediates | 696-59-3 | 
| 22 | 2,2',3,3'-Tetrahydro-1,1'-spirobi[1H-indene]-7,7'-diol | Pharmaceutical Intermediates | 223137-87-9 | 
| 23 | cyclooct-4-en-1-ol | Pharmaceutical Intermediates | 4277-34-3 | 
| 24 | 2,2'-Bipyridine-5,5'-dicarboxylic acid | Pharmaceutical Intermediates | 1802-30-8 | 
| 25 | (4-cyclopropyl-6-methoxypyrimidin-5-yl)boronic acid | Pharmaceutical Intermediates | 1798304-51-4 | 
| 26 | 2-Mercaptopyrimidine | Pharmaceutical Intermediates | 1450-85-7 | 
| 27 | 2-Indanone | Pharmaceutical Intermediates | 615-13-4 | 
| 28 | 2-(Aminomethyl)phenylacetic acid hydrochloride | Pharmaceutical Intermediates | 52067-92-2 | 
| 29 | 2-Thiobarbituric acid | Pharmaceutical Intermediates | 504-17-6 | 
| 30 | 4,6-dichloro-2-propylthiopyrimidine-5-amine | Pharmaceutical Intermediates | 145783-15-9 |