Acetohydroxamic acid

Drug ingredient

CAS 546-88-3

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

US productionNot reported

Import value, 2024$191M

Top sourceSwitzerland 35%

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 292800 · basket

These shares come from HS customs code 292800, which covers 112 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).

CH 35%SwitzerlandIT 28%ItalyCN 12%ChinaIN 6%IndiaJP 6%Japan

Canada
Spain
Mexico
Netherlands
Poland
Malta
Norway
Ukraine
Belgium
Israel
Czech Republic
Austria
Indonesia
United Arab Emirates
Brazil
Lithuania

2 FDA-registered drug labelers

Mission Pharmacal Company

PMC Isochem

Why It Matters

Sectors

Health

Downstream Uses

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

•Lithostat

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

$0.27/gA2B Chem LLC

CountryUnited States

Pack$271.00 / 1 kg

Purity98%

Vendors23 available

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

22 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.28	100 g	98%
Aaron Chemicals LLC	Hong Kong	$0.34	1 kg	98%
Angene Chemical	China → Hong Kong	$0.34	500 g	98%
Chemscene	United States	$0.39	1 kg	—
Ambeed, Inc.	United States	$0.42	1 kg	98%
Combi-Blocks, Inc.	United States	$0.42	1 kg	95%
AstaTech, Inc	United States	$0.43	500 g	95%
Fluorochem EU	Germany	$0.47	100 g	95%
Fluorochem UK	United Kingdom	$0.49	100 g	95%
Angene International Limited	United States	$0.52	100 g	98%
AK Scientific Specialized	United States	$0.60	500 g	95%
AK Scientific, Inc.	United States	$0.82	500 g	98%
Apollo Scientific UK	United Kingdom	$1.16	100 g	—
Cayman Europe	Estonia	$7.71	25 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$9.00	50 g	98%
Sigma-Aldrich	Germany	$9.00	50 g	98%
MedKoo Biosciences, Inc	United States	$22.00	25 g	98%
TargetMol Chemicals	China → United States	$78.00	1 g	99.91%
MedChemExpress MCE	Sweden	$118.58	1 g	98.66%
Molnova	China	$162.00	500 mg	99%
Angene	China → Hong Kong	$4266.67	30 mg	98%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	95%

Chemical Identity

CAS546-88-3

PubChem CID1990

DTXSIDDTXSID7022546

FormulaC2H5NO2

Mol. Weight75.07 g/mol

SMILESCC(=O)NO

Data Sources

PubChem · compound 1990Retrieved 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

Acetohydroxamic acid (CAS 546-88-3) https://chemicalindependence.com/chemical/546-88-3/ PubChem: 1990. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/1990 FDA National Drug Code directory: CAS 546-88-3. 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 292800 for CAS 546-88-3. Reporting year: 2024. https://usatrade.census.gov/