Florfenicol

Drug ingredient

CAS 73231-34-2

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

US productionNot reported

Import value, 2024$4M

Top sourceChina 50%

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 294140 · basket

These shares come from HS customs code 294140, which covers 4 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 50%ChinaES 29%SpainIN 21%India

Israel
United Kingdom

3 FDA-registered drug labelers

MINSHENG GROUP SHAOXING PHARMACEUTICAL CO., LTD.

Shandong Guobang Pharmaceutical Co., Ltd.

Zhejiang Hisoar Chuannan Pharmaceutical Co., 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

Vendor Pricing

$0.17/gAngene Chemical

CountryChina (registered: Hong Kong)

Pack$87.00 / 500 g

Purity98%

Vendors21 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

20 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$0.18	500 g	98%
Combi-Blocks, Inc.	United States	$0.36	1 kg	98%
A2B Chem LLC	United States	$0.37	100 g	98%
AA BLOCKS	United States	$0.41	1 kg	98%
AK Scientific Specialized	United States	$1.56	25 g	95%
AK Scientific, Inc.	United States	$2.16	25 g	98%
Angene International Limited	United States	$4.76	25 g	98%
AstaTech, Inc	United States	$47.00	1 g	98%
TargetMol Chemicals	China → United States	$68.00	1 g	99.34%
Cayman Europe	Estonia	$70.09	10 g	98%
Molnova	China	$138.00	500 mg	99%
MedChemExpress MCE	Sweden	$150.04	500 mg	99.9%
HTS Biochemie Innovationen	Germany	$350.00	1 g	95%
Sigma-Aldrich (Rush Stock)	Germany	$806.02	500 mg	—
Sigma-Aldrich	Germany	$806.02	500 mg	—
Apexbio Technology LLC	United States	$1000.00	50 mg	99.53%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Vitas M Chemical Limited	Hong Kong	$3170.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	98%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	97%

Chemical Identity

CAS73231-34-2

PubChem CID114811

DTXSIDDTXSID9045500

FormulaC12H14Cl2FNO4S

Mol. Weight358.2 g/mol

SMILESCS(=O)(=O)C1=CC=C(C=C1)C(C(CF)NC(=O)C(Cl)Cl)O

Data Sources

PubChem · compound 114811Retrieved 2026-04-07
FDA National Drug Code directoryRetrieved 2026-04-25
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Florfenicol (CAS 73231-34-2) https://chemicalindependence.com/chemical/73231-34-2/ PubChem: 114811. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/114811 FDA National Drug Code directory: CAS 73231-34-2. 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 294140 for CAS 73231-34-2. Reporting year: 2024. https://usatrade.census.gov/