Naproxen

Overview

Naproxen is a small molecule active pharmaceutical ingredient (ChEMBL CHEMBL154).

API suppliers (21)

Suppliers of Naproxen evidenced by a US FDA Type II Drug Master File or an EU Certificate of Suitability (CEP). Sources: FDA DMF list, EDQM certification database.

• Zhejiang Charioteer Pharmaceutical Co., Ltd.China3 active DMF GMP on record
• DR REDDYS LABORATORIES LTD2 active DMF GMP on record
• Divis LaboratoriesIndia2 active DMF GMP on record
• SOLARA ACTIVE PHARMA SCIENCES LTDIndia2 active DMF GMP on record
• APITORIA PHARMA PRIVATE LTDIndia2 active DMF GMP on record
• Hetero Labs LimitedIndia1 active DMF GMP on record
• TAPI NL BVNetherlands1 active DMF
• Rallis India LtdIndia
• BENZEX LABORATORIES LTD
• FARCHEMIA SRL
• CORDEN PHARMA BERGAMO SPAItaly GMP on record
• ALBEMARLE CORPUnited States
• HUBEI PHARMACEUTICAL FACTORY
• Natco PharmaIndia GMP on record
• MYLAN LABORATORIES LTD GMP on record
• CAMBREX PROFARMACO MILANO SRLItaly GMP on record
• BLASCHIM SPA
• DINAMITE DIPHARMA SPA
• Granules India LimitedIndia GMP on record
• ZAMBON GROUP SPA
• NOBEL CHEMICALS AB DIV FINE CHEMICALS INC

Patent & exclusivity (US)

Per the FDA Orange Book (72 approved US products), the latest listed US patent on Naproxen expires 3 Mar 2026. Generic API sourcing typically opens up once these lapse.

Chemical identity

IUPAC name

(2S)-2-(6-methoxynaphthalen-2-yl)propanoic acid

Canonical SMILES

C[C@@H](C1=CC2=C(C=C1)C=C(C=C2)OC)C(=O)O

InChIKey

CMWTZPSULFXXJA-VIFPVBQESA-N