| 9,10-Dihydrolysergic acid | 5878-43-3 |
| 9-Methyl-1,2,3,9-Tetrahydro-4H-Carbazol-4-One | 27387-31-1 |
| 9-Oxo-10(9H)-acridineacetic acid | 38609-97-1 |
| Abatacept | 332348-12-6 |
| Abciximab | 143653-53-6 |
| Abrocitnib | 1802446-37-1 |
| Acalabrutinib | 1420477-60-6 |
| Acebrophylline | 96989-76-3 |
| Acebutolol HCl | 34381-68-5 |
| Acemetacin | 53164-05-9 |
| Acesulfame | 33665-90-6 |
| Acetamide | 60-35-5 |
| Acetaminophen / Diphenhydramine HCl DC | 1632051-40-1 |
| Acetone | 67-64-1 |
| Acetoxy Empagliflozin | 915095-99-7 |
| Acetyl Tetrapeptide-3 | 827306-88-7 |
| Acetylarginyltryptophyl Diphenylglycine | 1334583-93-5 |
| Acetylcholine | 51-84-3 |
| Aclidinium | 727649-81-2 |
| Actinoquinol | 15301-40-3 |
| Adamantane | |
| Adamantanone | 700-58-3 |
| Ademetionine 1,4-Butanedisulfonate | 101020-79-5 |
| Aescin Sodium Salt | 20977-05-3 |
| Aflibercept | 862111-32-8 |
| Afoxolaner Intermediates | |
| Agrimony | |
| Alanine (-D) | 338-69-2 |
| Albaconazole | 187949-02-6 |
| Albendazole oxide | 54029-12-8 |
| Albiglutide | 782500-75-8 |
| Albumin Tannate | 9006-52-4 |
| Albuterol Sulfate | 51022-70-9 |
| Aldesleukin | 110942-02-4 |
| Aldosterone | 52-39-1 |
| Alectinib Hydrochloride | 1256589-74-8 |
| Alemtuzumab | 216503-57-0 |
| Aletinib HCL | 1356963-11-5 |
| Algamon | 65-45-2 |
| Alizapride | 59338-93-1 |