Acetylcysteine

CAS 616-91-1 8 API suppliersSmall Molecule

Overview

Acetylcysteine is a small molecule active pharmaceutical ingredient (ChEMBL CHEMBL600).

API suppliers (8)

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

Where these suppliers are
China3Spain1Germany1

Country recorded for 5 of 8 suppliers.

2 of 8 hold a GMP certificate on record in the EU or UK registers

  • MOEHS IBERICA SLSpain1 active DMF GMP on record
  • SHANXI YANGHE PHARMACEUTICAL CO LTD1 active DMF
  • Zhejiang Haizhou Pharmaceutical Co., Ltd.China1 active DMF
  • Fujian South Pharmaceutical Co. Ltd.China1 active DMF
  • PHARMAZELL GMBHGermany1 active DMF GMP on record
  • NINGBO ZHENHAI HAIDE BIOTECH CO LTDChina1 active DMF
  • WAITAKI INTERNATIONAL BIOSCIENCES SUB WAITAKI CANADA LTD
  • NIPPON PROTEIN CO INC

Patent & exclusivity (US)

Per the FDA Orange Book (20 approved US products), the latest listed US patent on Acetylcysteine expires 6 Apr 2032 and exclusivity 26 Nov 2027. Generic API sourcing typically opens up once these lapse.

Chemical identity

IUPAC name
(2R)-2-acetamido-3-sulfanylpropanoic acid
Canonical SMILES
CC(=O)N[C@@H](CS)C(=O)O
InChIKey
PWKSKIMOESPYIA-BYPYZUCNSA-N
Verified Supplier Partner

Do you supply Acetylcysteine? Get in front of buyers actively sourcing it.

We route real sourcing requests from pharma buyers to vetted, verified partners — qualified leads, not just a listing. Tell us what you make and we'll be in touch about becoming a Verified Supplier Partner.

No cost to enquire · we only reach out with a fit.

Ready to Accelerate Your
Discovery Workflow?

Find, vet, and source drug-manufacturing partners faster — with FDA compliance screening built in. Start free for 7 days.

Start free trialBook a demo