1,2-Naphthoquinone

Drug ingredient

CAS 524-42-5

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

US productionNot reported

Import value, 2024$35M

Top sourceChina 49%

EPA lists this chemical as inactive, meaning no company reported making, importing or processing it in the US from 2006 to 2016.

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 291469 · basket

These shares come from HS customs code 291469, which covers 31 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 49%ChinaIN 17%IndiaJP 11%JapanNL 9%NetherlandsIT 8%Italy

Germany
Taiwan
Canada

1 FDA-registered drug labeler

Energique, Inc.

Why It Matters

Sectors

Health

Downstream Uses

Appears in 2 drug and cosmetic product listings (FDA).

•Lungex II
•Kidnex IV

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

$8.84/gAaron Chemicals LLC

CountryHong Kong

Pack$442.00 / 50 g

Purity95%

Vendors16 available

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

15 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$8.92	50 g	95%
BLD Pharmatech Ltd.	China	$15.75	100 g	98%
Combi-Blocks, Inc.	United States	$16.80	25 g	96%
A2B Chem LLC	United States	$17.20	5 g	95%
Interbioscreen	Hong Kong	$20.50	10 g	95%
BLD Pharmatech GmbH	Germany	$21.90	10 g	98%
AA BLOCKS	United States	$25.80	5 g	95%
Manchester Organics	United Kingdom	$28.20	10 g	95%
AstaTech, Inc	United States	$36.20	5 g	95%
Angene International Limited	United States	$163.00	1 g	95%
Labotest KG	Germany	$453.00	1000 mg	90%
TargetMol Chemicals	China → United States	$640.00	100 mg	98.01%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	95%
Angene	China → Hong Kong	$4266.67	30 mg	95%

Chemical Identity

CAS524-42-5

PubChem CID10667

DTXSIDDTXSID2060171

FormulaC10H6O2

Mol. Weight158.15 g/mol

SMILESC1=CC=C2C(=C1)C=CC(=O)C2=O

Data Sources

PubChem · compound 10667Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
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

1,2-Naphthoquinone (CAS 524-42-5) https://chemicalindependence.com/chemical/524-42-5/ PubChem: 10667. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/10667 EPA TSCA Inventory: CAS 524-42-5. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 291469 for CAS 524-42-5. Reporting year: 2024. https://usatrade.census.gov/