Osimertinib mesylate
Drug ingredientCAS 1421373-66-1
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.
4 FDA-registered drug labelers
Lonza AG
MSN Laboratories Private Limited
SciAnda(Changshu) Pharmaceuticals, Ltd.
ScinoPharm Taiwan Ltd.
Why It Matters
Sectors
Health
Downstream UsesNot recorded
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
CAS1421373-66-1
PubChem CID78357807
DTXSIDDTXSID101027822
FormulaC29H37N7O5S
Mol. Weight595.7 g/mol
SMILESCN1C=C(C2=CC=CC=C21)C3=NC(=NC=C3)NC4=C(C=C(C(=C4)NC(=O)C=C)N(C)CCN(C)C)OC.CS(=O)(=O)O
Data Sources
- PubChem · compound 78357807Retrieved 2026-04-07
- FDA National Drug Code directoryRetrieved 2026-04-25
- FDA National Drug Code directoryRetrieved 2026-04-07
Brief citations
Osimertinib mesylate (CAS 1421373-66-1) https://chemicalindependence.com/chemical/1421373-66-1/ PubChem: 78357807. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/78357807 FDA National Drug Code directory: CAS 1421373-66-1. 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/