| Acefylline | 652-37-9 | Bronchodilators | 1 |
| Acemetacin | 53164-05-9 | Antihypertensive agents | 1 |
| Acetamide | 60-35-5 | Detoxifiers in oncolytics | 1 |
| Acetaminophen / Diphenhydramine HCl DC | 1632051-40-1 | | 1 |
| Acetone | 67-64-1 | | 1 |
| Acetonitrile, 2-(3-Azetidinylidene)-, Hydrochloride (1:1) | 1314910-43-4 | Intermediates | 1 |
| Acetoxy Empagliflozin | 915095-99-7 | | 1 |
| Acetyl Tetrapeptide-2 | 1239011-60-9 | | 1 |
| Acetyl Tetrapeptide-9 | 928006-50-2 | | 1 |
| Acetylarginyltryptophyl Diphenylglycine | 1334583-93-5 | | 1 |
| Acetylcholine | 51-84-3 | Cholinesterase inhibitors | 1 |
| Acetylcholine chloride | 60-31-1 | | 1 |
| Aclidinium | 727649-81-2 | Anticholinergics/Parasympathemimetics | 1 |
| Actinoquinol | 15301-40-3 | | 1 |
| Adamantane | | | 1 |
| Adamantanone | 700-58-3 | Antivirals | 1 |
| Aescin Sodium Salt | 20977-05-3 | | 1 |
| Aflibercept | 862111-32-8 | | 1 |
| Afoxolaner Intermediates | | | 1 |
| Agrimony | | Herbal remedies | 1 |
| Alanine (-D) | 338-69-2 | Means for diseases of the bone and muscular system | 1 |
| Albaconazole | 187949-02-6 | Anti-infective Agents | 1 |
| Albiglutide | 782500-75-8 | GLP1 agonists | 1 |
| Albumin Tannate | 9006-52-4 | Antidiarrheals | 1 |
| Albuterol Sulfate | 51022-70-9 | | 1 |
| Aldesleukin | 110942-02-4 | Interleukin inhibitors | 1 |
| Aldosterone | 52-39-1 | | 1 |
| Alectinib Hydrochloride | 1256589-74-8 | | 1 |
| Alemtuzumab | 216503-57-0 | | 1 |
| Aletinib HCL | 1356963-11-5 | | 1 |
| Algamon | 65-45-2 | | 1 |
| Alizapride | 59338-93-1 | Dopamine antagonists | 1 |
| Allylamine | 107-11-9 | Reagents and solvents | 1 |
| Aloe Vera Extract | 8001-97-6 | | 1 |
| Aloe Vera Gel | 8001-97-6 | | 1 |
| Alpha Cyclohexyl Mandelic Acid Methyl Ester | 10399-13-0 | Diuretics | 1 |
| Aluminum magnesium hydroxide | 39366-43-3 | Antacids | 1 |
| Alverine | 150-59-4 | Urological spasmolytics | 1 |
| Amenamevir | 841301-32-4 | Antivirals | 1 |
| all-trans Retinal | 116-31-4 | | 1 |