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Dicloxacillin sodium

Drug ingredient

CAS 343-55-5

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 343-55-5
1 Na⁺
US productionNot reported
Import value, 2024$6.4B
Top sourceSingapore 36%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293499 · basket

These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India
6 FDA-registered drug labelers
A-S Medication Solutions
Asclemed USA, Inc.
Aurobindo Pharma Limited
Bryant Ranch Prepack
PD-Rx Pharmaceuticals, Inc.
Teva Pharmaceuticals USA, Inc.

Why It Matters

Sectors
Health
Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

  • •Dicloxacillin Sodium
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS343-55-5
PubChem CID23667628
DTXSIDDTXSID60187861
FormulaC19H16Cl2N3NaO5S
Mol. Weight492.3 g/mol
SMILESCC1=C(C(=NO1)C2=C(C=CC=C2Cl)Cl)C(=O)NC3C4N(C3=O)C(C(S4)(C)C)C(=O)[O-].[Na+]

Data Sources

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Brief citations

Dicloxacillin sodium (CAS 343-55-5) https://chemicalindependence.com/chemical/343-55-5/ PubChem: 23667628. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/23667628 FDA National Drug Code directory: CAS 343-55-5. 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/ US Census international trade: HS 293499 for CAS 343-55-5. Reporting year: 2024. https://usatrade.census.gov/