| 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 |
| Nazartinib | 1508250-71-2 | Antineoplastics | 0 |
| Ncs-Chromophore | 81604-85-5 | Other substances | 0 |
| Neamine | 3947-65-7 | | 0 |
| Nebacumab | 138661-01-5 | Other substances | 0 |
| Nebicapone | 274925-86-9 | | 0 |
| Nebularine | 550-33-4 | Anti-infective Agents | 0 |
| Necitumumab | 906805-06-9 | | 0 |
| Necuparanib | 1415139-34-2 | Anticancer drugs | 0 |
| Nedisertib | 1637542-33-6 | Enzyme Replacements/modifiers | 0 |
| Nedometinib | 2252314-46-6 | | 0 |
| Nedosiran | 2266591-83-5 | Enzyme Replacements/modifiers | 0 |
| Nefiracetam | 77191-36-7 | Other substances | 0 |
| Neflamapimod | 209410-46-8 | | 0 |
| Nefopam | 13669-70-0 | Analgesics | 0 |
| Neladenoson bialanate | 1239309-58-0 | Other substances | 0 |
| Nelatimotide | 1629213-88-2 | | 0 |
| Nelipepimut-S | 160212-35-1 | Other substances | 0 |
| Nelivaptan | 439687-69-1 | Other substances | 0 |
| Nelotanserin | 839713-36-9 | Central Nervous System Agents | 0 |