2H-Pyran-5-carboxylic acid, 4,6-dimethyl-2-oxo-, methyl ester

CAS 41264-06-6

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.

Top sourceNo public record

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.

Where It Comes From

EPA reports by year

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

EPA-registered manufacturers (3)

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

Cabb Group Gmbh · DE Germany

Futurefuel

Kansas Holdco 1

Why It Matters

Sectors

AgricultureCore Chemicals

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 1 functional role.

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

Vendor Pricing

$11.80/gA2B Chem LLC

CountryUnited States

Pack$59.00 / 5 g

Purity98%

Vendors13 available

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

12 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$14.40	5 g	98%
Combi-Blocks, Inc.	United States	$15.00	5 g	98%
Chemscene	United States	$16.80	5 g	—
Aaron Chemicals LLC	Hong Kong	$37.80	5 g	98%
Angene Chemical	China → Hong Kong	$40.80	5 g	98%
Interbioscreen	Hong Kong	$41.00	10 g	95%
AstaTech (2 weeks)	United States	$104.40	5 g	95%
Vitas M Chemical Limited	Hong Kong	$390.00	500 mg	90%
Angene International Limited	United States	$490.00	1 g	99%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	98%
ChemDiv, Inc.	United States	$69000.00	1 mg	90%

Chemical Identity

CAS41264-06-6

PubChem CID170485

DTXSIDDTXSID4068292

FormulaC9H10O4

Mol. Weight182.17 g/mol

SMILESCC1=CC(=O)OC(=C1C(=O)OC)C

Data Sources

EPA CompTox (DSSTox) · DTXSID4068292Retrieved 2026-04-06
PubChem · compound 170485Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

2H-Pyran-5-carboxylic acid, 4,6-dimethyl-2-oxo-, methyl ester (CAS 41264-06-6) https://chemicalindependence.com/chemical/41264-06-6/ EPA CompTox (DSSTox): DTXSID4068292. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4068292 PubChem: 170485. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/170485 EPA Chemical Data Reporting: 41264-06-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 41264-06-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting