Symclosene

CAS 87-90-1

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$309M

Top sourceChina 40%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293369 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production 32.6K lb · Imports 163.8K lb

These shares come from HS customs code 293369, which covers 192 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 40%ChinaJP 19%JapanIN 15%IndiaES 11%SpainDE 5%Germany

Canada
Austria
United Kingdom
Netherlands
United Arab Emirates
Malaysia
Indonesia
Turkey
Belgium
Ukraine
Hungary
Latvia
Russia
Hong Kong

EPA-registered manufacturers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Kik International

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Wego Chemical Group

EPA-registered importers (3)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Toyota Tsusho · JP Japan

Toyota Tsusho America

Water Solutions Un

Why It Matters

Sectors

Consumer Products

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

Industrial Uses

•Bleaching agent in Wholesale and Retail Trade (100%)Processing—repackaging

Vendor Pricing

$0.06/gA2B Chem LLC

CountryUnited States

Pack$32.00 / 500 g

Purity97%

Vendors12 available

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

11 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.07	500 g	95%
ALFA AESAR	Germany	$0.10	2.5 kg	90%
AK Scientific, Inc.	United States	$0.14	500 g	95%
Sigma-Aldrich (Rush Stock)	Germany	$0.16	500 g	95%
Sigma-Aldrich	Germany	$0.16	500 g	95%
Fluorochem UK	United Kingdom	$0.17	500 g	98%
AstaTech, Inc	United States	$0.89	100 g	95%
MedKoo Biosciences, Inc	United States	$1.40	250 g	98%
Labotest KG	Germany	$217.80	5000 mg	90%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	95%

Chemical Identity

CAS87-90-1

PubChem CID6909

DTXSIDDTXSID2026523

FormulaC3Cl3N3O3

Mol. Weight232.41 g/mol

SMILESC1(=O)N(C(=O)N(C(=O)N1Cl)Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID2026523Retrieved 2026-04-06
PubChem · compound 6909Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Symclosene (CAS 87-90-1) https://chemicalindependence.com/chemical/87-90-1/ EPA CompTox (DSSTox): DTXSID2026523. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2026523 PubChem: 6909. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6909 EPA Chemical Data Reporting: 87-90-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 87-90-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293369 for CAS 87-90-1. Reporting year: 2024. https://usatrade.census.gov/