2-Mercaptomethylbenzimidazole

CAS 53988-10-6

EPA’s 2023 records show zero U.S. production of this chemical.

US productionZero

Import value, 2024$1.4B

Import volumeCBI

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

Top sourceIreland 33%

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. 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 293399 · basket

EPA reports by year

2023: US production Zero · Imports Confidential
2019: US production Confidential · Imports 105.4K lb

These shares come from HS customs code 293399, which covers 518 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).

IE 33%IrelandCN 26%ChinaIN 11%IndiaDE 9%GermanyIT 4%Italy

Taiwan
Poland
Canada
Ivory Coast
Greece
Hungary
Indonesia
Latvia
Belgium
Slovakia
Czech Republic
Austria
Netherlands
Finland
Denmark
Croatia
Australia
South Africa
Sweden
Hong Kong
Malta
Singapore
Lithuania
Malaysia
Oman
Serbia

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.

Aceto Us

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.

Akrochem

Lanxess

Michelin North America

Why It Matters

Sectors

Metals & MiningPlastics & Rubber

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

Used in 2 sectors as 3 functional roles.

•Intermediate in Miscellaneous Manufacturing (100%)Processing as a reactant
•Stabilizing agent in Rubber Product Manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product
•Antioxidant in Rubber Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$2.05/gAaron Chemicals LLC

CountryHong Kong

Pack$1025.00 / 500 g

Purity98%

Vendors11 available

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

10 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$2.19	500 g	98%
Combi-Blocks, Inc.	United States	$75.00	10 g	95%
A2B Chem LLC	United States	$79.60	10 g	95%
AA BLOCKS	United States	$84.00	10 g	95%
AstaTech (2 weeks)	United States	$410.00	1 g	95%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
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%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS53988-10-6

PubChem CID3034478

DTXSIDDTXSID9052185

FormulaC8H8N2S

Mol. Weight164.23 g/mol

SMILESCC1=C2C(=CC=C1)NC(=S)N2

Data Sources

EPA CompTox (DSSTox) · DTXSID9052185Retrieved 2026-04-06
PubChem · compound 3034478Retrieved 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

2-Mercaptomethylbenzimidazole (CAS 53988-10-6) https://chemicalindependence.com/chemical/53988-10-6/ EPA CompTox (DSSTox): DTXSID9052185. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9052185 PubChem: 3034478. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/3034478 EPA Chemical Data Reporting: 53988-10-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 53988-10-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293399 for CAS 53988-10-6. Reporting year: 2024. https://usatrade.census.gov/