Tropolone

Drug ingredient

CAS 533-75-5

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

US productionNot reported

Import value, 2024$90M

Top sourceGermany 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 291440 · basket

These shares come from HS customs code 291440, which covers 35 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).

DE 36%GermanyBE 32%BelgiumCN 13%ChinaTW 7%TaiwanBR 5%Brazil

Switzerland
Hong Kong
Japan
India
Canada
Israel
United Kingdom
Netherlands
Spain
Ukraine

1 FDA-registered drug labeler

ANUBIS COSMETICS SL

Why It Matters

Sectors

Health

Downstream Uses

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

•Anubismed

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

$0.75/gAaron Chemicals LLC

CountryHong Kong

Pack$377.00 / 500 g

Purity97%

Vendors26 available

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

25 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.81	500 g	97%
AA BLOCKS	United States	$0.86	500 g	98%
A2B Chem LLC	United States	$0.86	500 g	98%
Combi-Blocks, Inc.	United States	$1.07	500 g	97%
Chemscene	United States	$1.19	500 g	—
BLD Pharmatech Co., Limited	United States	$1.23	500 g	97%
BLD Pharmatech GmbH	Germany	$1.23	500 g	97%
BLD Pharmatech Ltd.	China	$1.23	500 g	97%
Ambeed, Inc.	United States	$1.23	500 g	97%
Fluorochem EU	Germany	$1.39	100 g	98%
AK Scientific Specialized	United States	$1.52	500 g	95%
Fluorochem UK	United Kingdom	$1.54	25 g	98%
AK Scientific, Inc.	United States	$2.08	500 g	98%
AstaTech (2 weeks)	United States	$2.72	100 g	98%
Angene International Limited	United States	$3.20	10 g	98%
MedChemExpress MCE	Sweden	$6.07	100 g	99.99%
Accela ChemBio	United States	$10.00	1 g	98%
Cayman Europe	Estonia	$16.76	25 g	98%
ALFA AESAR	Germany	$21.02	25 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$43.96	25 g	98%
Sigma-Aldrich	Germany	$43.96	25 g	98%
TargetMol Chemicals EU	Austria	$290.00	100 mg	99.89%
Labotest KG	Germany	$453.00	1000 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	97%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	99%

Chemical Identity

CAS533-75-5

PubChem CID10789

DTXSIDDTXSID8049416

FormulaC7H6O2

Mol. Weight122.12 g/mol

SMILESC1=CC=C(C(=O)C=C1)O

Data Sources

PubChem · compound 10789Retrieved 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

← Back to Dashboard ← Back to Health

Brief citations

Tropolone (CAS 533-75-5) https://chemicalindependence.com/chemical/533-75-5/ PubChem: 10789. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/10789 FDA National Drug Code directory: CAS 533-75-5. 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 291440 for CAS 533-75-5. Reporting year: 2024. https://usatrade.census.gov/