Nafcillin sodium
Drug ingredientCAS 985-16-0
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.
14 FDA-registered drug labelers
ACS Dobfar S.p.A
Armas Pharmaceuticals Inc.
Athenex Pharmaceutical Division, LLC.
Aurobindo Pharma Limited
Avenacy Inc.
Baxter Healthcare Corporation
Eugia US LLC
Fresenius Kabi iPSUM S.r.l.
Fresenius Kabi USA, LLC
Heritage Pharmaceuticals Inc. d/b/a/ Avet Pharmaceuticals Inc.
NorthStar Rx, LLC
ONESOURCE SPECIALTY PHARMA LIMITED
Sagent Pharmaceuticals
WG Critical Care, LLC
Why It Matters
Sectors
Health
Downstream Uses
Appears in 2 drug and cosmetic product listings (FDA).
- •Nafcillin
- •Nafcillin Sodium
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
CAS985-16-0
PubChem CID23667630
DTXSIDDTXSID00904716
FormulaC21H21N2NaO5S
Mol. Weight436.5 g/mol
SMILESCCOC1=C(C2=CC=CC=C2C=C1)C(=O)NC3C4N(C3=O)C(C(S4)(C)C)C(=O)[O-].[Na+]
Data Sources
- PubChem · compound 23667630Retrieved 2026-04-07
- FDA National Drug Code directoryRetrieved 2026-04-25
- FDA National Drug Code directoryRetrieved 2026-04-07
Brief citations
Nafcillin sodium (CAS 985-16-0) https://chemicalindependence.com/chemical/985-16-0/ PubChem: 23667630. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/23667630 FDA National Drug Code directory: CAS 985-16-0. 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/