4-Amino-6-tert-butyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one

CAS 33509-43-2

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

US productionZero

Import value, 2024$309M

Import volumeCBI

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

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. 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 Zero · Imports Confidential
2019: US production Confidential · Imports Confidential

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 importers (2)

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

Bayer Ag · DE Germany

Bayer Us Holding

Why It Matters

Sectors

Agriculture

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

•Intermediate in Pesticide, Fertilizer, and Other Agricultural Chemical Manufacturing (100%)Processing as a reactant

Vendor Pricing

$5.95/gAaron Chemicals LLC

CountryHong Kong

Pack$2976.00 / 500 g

Purity97%

Vendors6 available

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

5 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$6.35	500 g	97%
A2B Chem LLC	United States	$8.64	25 g	97%
AA BLOCKS	United States	$9.60	25 g	97%
Otava, Ltd.	Ukraine	$229.00	1 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	97%

Chemical Identity

CAS33509-43-2

PubChem CID676486

DTXSIDDTXSID0027981

FormulaC7H12N4OS

Mol. Weight200.26 g/mol

SMILESCC(C)(C)C1=NNC(=S)N(C1=O)N

Data Sources

EPA CompTox (DSSTox) · DTXSID0027981Retrieved 2026-04-06
PubChem · compound 676486Retrieved 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

4-Amino-6-tert-butyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one (CAS 33509-43-2) https://chemicalindependence.com/chemical/33509-43-2/ EPA CompTox (DSSTox): DTXSID0027981. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID0027981 PubChem: 676486. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/676486 EPA Chemical Data Reporting: 33509-43-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 33509-43-2. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293369 for CAS 33509-43-2. Reporting year: 2024. https://usatrade.census.gov/