3,5,6-Trichloro-2-pyridinol

CAS 6515-38-4

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$907M

Top sourceIreland 47%

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 293379 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Zero

These shares come from HS customs code 293379, which covers 105 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 47%IrelandBE 19%BelgiumSG 11%SingaporeIT 4%ItalyCH 4%Switzerland

Brazil
Canada
Taiwan
Ukraine
Portugal
Netherlands
South Korea
Israel
Czech Republic
Spain
Finland
Hungary
Malaysia
Australia
Austria
Slovenia

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.

Corteva Agriscience

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 (0%)Processing as a reactant

Vendor Pricing

$0.31/gAaron Chemicals LLC

CountryHong Kong

Pack$154.00 / 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	$0.36	500 g	98%
A2B Chem LLC	United States	$0.56	25 g	98%
Combi-Blocks, Inc.	United States	$0.56	500 g	97%
AA BLOCKS	United States	$0.64	25 g	98%
Chemscene	United States	$0.67	100 g	—
Ambeed, Inc.	United States	$0.70	100 g	98%
Synthonix	United States	$0.80	25 g	95%
Angene International Limited	United States	$3.16	25 g	98%
MedChemExpress MCE	Sweden	$55.66	1 g	99.85%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS6515-38-4

PubChem CID23017

DTXSIDDTXSID7038317

FormulaC5H2Cl3NO

Mol. Weight198.43 g/mol

SMILESC1=C(C(=O)NC(=C1Cl)Cl)Cl

Data Sources

EPA CompTox (DSSTox) · DTXSID7038317Retrieved 2026-04-06
PubChem · compound 23017Retrieved 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

3,5,6-Trichloro-2-pyridinol (CAS 6515-38-4) https://chemicalindependence.com/chemical/6515-38-4/ EPA CompTox (DSSTox): DTXSID7038317. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7038317 PubChem: 23017. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/23017 EPA Chemical Data Reporting: 6515-38-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6515-38-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293379 for CAS 6515-38-4. Reporting year: 2024. https://usatrade.census.gov/