Fosamprenavir calcium
Drug ingredientCAS 226700-81-8
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
Glaxo Operations UK Ltd
Matrix Pharmacorp Private Limited
Mylan Pharmaceuticals Inc.
Sun Pharmaceutical Industries, Inc.
Why It Matters
Sectors
Health
Downstream Uses
Appears in 1 drug and cosmetic product listings (FDA).
- •Fosamprenavir Calcium
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
CAS226700-81-8
PubChem CID131535
DTXSIDDTXSID0046777
FormulaC25H34CaN3O9PS
Mol. Weight623.7 g/mol
SMILESCC(C)CN(CC(C(CC1=CC=CC=C1)NC(=O)OC2CCOC2)OP(=O)([O-])[O-])S(=O)(=O)C3=CC=C(C=C3)N.[Ca+2]
Data Sources
- PubChem · compound 131535Retrieved 2026-04-07
- FDA National Drug Code directoryRetrieved 2026-04-25
- FDA National Drug Code directoryRetrieved 2026-04-07
Brief citations
Fosamprenavir calcium (CAS 226700-81-8) https://chemicalindependence.com/chemical/226700-81-8/ PubChem: 131535. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/131535 FDA National Drug Code directory: CAS 226700-81-8. 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/