| Naftazone | 15687-37-3 | Cardiac stimulants | 0 |
| Nagrestipen | 166089-33-4 | Other substances | 0 |
| Naldemedine | 916072-89-4 | Other substances | 0 |
| Nalfurafine | 152657-84-6 | Other substances | 0 |
| Nalorphine | 62-67-9 | Antidotes, Deterrents, and Toxicologic Agents | 0 |
| Naluzotan | 740873-06-7 | Central Nervous System Agents | 0 |
| Namilumab | 1206681-39-1 | Other substances | 0 |
| Namitecan | 372105-27-6 | Anticancer drugs | 0 |
| Namodenoson | 163042-96-4 | Central Nervous System Agents | 0 |
| Nanatinostat | 1256448-47-1 | Antineoplastics | 0 |
| Nandrolone hydrogen sulfate | 98804-55-8 | | 0 |
| Nangibotide | 2014384-91-7 | Anti-inflammatory Agents | 0 |
| Nanvuranlat | 1037592-40-7 | Other substances | 0 |
| Napabucasin | 83280-65-3 | | 0 |
| Naphthalen-1-Yl-Acetic Acid | 86-87-3 | | 0 |
| Naphthalene Trisulfonate | | | 0 |
| Naphthalene-2,6-disulfonic acid | 581-75-9 | | 0 |
| Naphthoquine | 173531-57-2 | Antimalarial | 0 |
| Naproxcinod | 163133-43-5 | Anti-inflammatory Agents | 0 |
| Naproxen etemesil | 385800-16-8 | | 0 |
| Naptumomab estafenatox | 676258-98-3 | Other substances | 0 |
| Naquotinib | 1448232-80-1 | Enzyme Replacements/modifiers | 0 |
| Narasin | 55134-13-9 | Anti-infective Agents | 0 |
| Naratuximab emtansine | 1607824-64-5 | Other substances | 0 |
| Narlaprevir | 865466-24-6 | Other substances | 0 |
| Narmafotinib | 1393653-34-3 | | 0 |
| Narnatumab | 1188275-92-4 | | 0 |
| Naronapride | 860174-12-5 | Central Nervous System Agents | 0 |
| Narsoplimab | 2108782-45-0 | Other substances | 0 |
| Natalizumab | 189261-10-7 | | 0 |
| Nattokinase | 133876-92-3 | Enzyme Replacements/modifiers | 0 |
| Navarixin | 473727-83-2 | Anti-asthma | 0 |
| Naveglitazar | 476436-68-7 | Anti-diabetics | 0 |
| Navicixizumab | 1638338-43-8 | Other substances | 0 |
| Navitoclax | 923564-51-6 | Anticancer drugs | 0 |
| Navoximod | 1402837-78-8 | | 0 |
| Navtemadlin | 1352066-68-2 | Antineoplastics | 0 |
| Navuridine | 84472-85-5 | | 0 |
| Naxifylline | 166374-49-8 | | 0 |
| Naxitamab | 1879925-92-4 | Cardiac stimulants | 0 |