| 3,7-Dichloroimipramine Hydrochloride | 577-11-7 | Tricyclic antidepressants | 1 |
| 4 Chloro Ortho Phenylene Diamine | 95-83-0 | Dermatics | 1 |
| 4 Nitro Ortho Phenylene Diamine | 99-56-9 | Dermatics | 1 |
| 4,4-Dicarboxy Stilbene | 100-31-2 | | 1 |
| 4,4-Dimethyl-3,5,8-trioxabicyclo[5.1.0]octane | 57280-22-5 | | 1 |
| 4-(aminomethyl)-3-cyclohexene -1-carboxylic acid | 330838-52-3 | | 1 |
| 4-Amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidine | 151266-23-8 | | 1 |
| 4-Androstenedione | 63-05-8 | | 1 |
| 4-Bromo-1-chloro-2-(4-ethoxybenzyl)benzene | 461432-23-5 | | 1 |
| 4-Bromo-1-chloro-2-(4-ethoxybenzyl)benzene | 461432-23-5 | Intermediates | 1 |
| 4-Chloro-7-tosyl-7H-pyrrolo[2,3-d]pyrimidine | 479633-63-1 | Intermediates | 1 |
| 4-Chloro-7H-pyrrolo[2,3-d]pyrimidine | 3680-69-1 | Intermediates | 1 |
| 4-Chlorocinnamic Acid | 1615-02-7 | Diagnostic agents | 1 |
| 4-Cyano Benzyl Bromide | 17201-43-3 | | 1 |
| 4-Diethylamino-2-Butyn-1-O1 | 10575-25-4 | Central Nervous System Agents | 1 |
| 4-Fluorobenzylamine | | Diagnostic agents | 1 |
| 4-Hydroxy-19-nortestosterone | 4721-69-1 | Androgens | 1 |
| 4-Hydroxy-9H-Carbazole | 52602-39-8 | Central Nervous System Agents | 1 |
| 4-Hydroxytestosterone | 2141-17-5 | Androgens | 1 |
| 4-Methoxybenzyl Chloride | 824-94-2 | Diagnostic agents | 1 |
| 4-Methyl Benzonitrile | 104-85-8 | | 1 |
| 5 Chloro Benzimidazole | 4857-06-1 | Anthelmintics | 1 |
| 5 Nitro Benzimidazole | | Anthelmintics | 1 |
| 5-(1H-Pyrrol-1-yl)-1,3-dihydro-2H-benzimidazole-2-thione | 172152-53-3 | Antineoplastics | 1 |
| 5-(4-Phenoxyphenyl)-7H-pyrrolo[2,3-d]pyrimidin-4-ylamine | 330786-24-8 | | 1 |
| 5-Bromo-2-Chlorophenyl 4- Fluorophenyl Methanone | 915095-85-1 | | 1 |
| 5-Fluorouracil | 51-21-8 | Cytostatic antibiotics | 1 |
| 5-Methyltetrahydrofolate (5-MTHF) | 134-35-0 | | 1 |
| 5-NITRO-1H-BENZIMIDAZOLE-2-THILOL | 6325-91-3 | Antiprotozoics | 1 |
| 5-amino-1H-benzimidazole-2-thiol | 2818-66-8 | Anthelmintics | 1 |
| 5-fluorocytosine | 1018899-04-1 | | 1 |
| 6-Acethyoxy-8-methyl-8-azabicyclo[3.2.1]octan-3-one | 165813-66-1 | | 1 |
| 6-Methyluracil | 626-48-2 | | 1 |
| 6-Tioguanine (6-TG) | 154-42-7 | Antimetabolites | 1 |
| 6-isoquinolinamine | 23687-26-5 | Central Nervous System Agents | 1 |
| 7-Bromobenzo[d][1,3]dioxole-4-carbonitrile | 1898014-67-9 | Intermediates | 1 |
| 7-Chloro-1,2,3,4-tetrahydro-5H-1-benzazepin-5-one | 160129-45-3 | Intermediates | 1 |
| 7-Ethyltryptophol | 41340-36-7 | Intermediates | 1 |
| 7-Troc-paclitaxel | 114915-17-2 | | 1 |
| 9-Methyl-1,2,3,9-Tetrahydro-4H-Carbazol-4-One | 27387-31-1 | Central Nervous System Agents | 1 |