Cysteamine bitartrate
Drug ingredientCAS 27761-19-9
This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
US productionNot reported
Top sourceNo public record
This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.
Why supply is unknownWhere It Comes From
EPA and Census publish no US supply data for this chemical.
8 FDA-registered drug labelers
Anonima Materie Sintetiche and Affini (AMSA) Spa
Azico Biophore India Private Limited
Cambrex Profarmaco Milano Srl
Farmabios S.p.A.
HONOUR LAB LIMITED
Horizon Therapeutics USA, Inc.
Maithri Laboratories Private Limited
Mylan Pharmaceuticals Inc.
Why It Matters
Sectors
Health
Downstream Uses
Appears in 2 drug and cosmetic product listings (FDA).
- •Procysbi
- •Cystagon
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Chemical Identity
CAS27761-19-9
PubChem CID11958147
DTXSIDDTXSID801026168
FormulaC6H13NO6S
Mol. Weight227.24 g/mol
SMILESC(CS)N.C(C(C(=O)O)O)(C(=O)O)O
Data Sources
- PubChem · compound 11958147Retrieved 2026-04-07
- FDA National Drug Code directoryRetrieved 2026-04-25
- FDA National Drug Code directoryRetrieved 2026-04-07
Brief citations
Cysteamine bitartrate (CAS 27761-19-9) https://chemicalindependence.com/chemical/27761-19-9/ PubChem: 11958147. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/11958147 FDA National Drug Code directory: CAS 27761-19-9. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/