2,2'-Oxamidodiethyl bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]

CAS 70331-94-1

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.

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 Confidential

Domestic parents -- activity not disclosed (2)

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

Si Group

Univar Solutions

EPA-registered importers (1)

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

Mayzo

Why It Matters

Sectors

ConstructionPlastics & 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 3 sectors as 3 functional roles.

•Antioxidant in Adhesive Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Chemical reaction regulator in Synthetic Rubber Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
•Chemical reaction regulator in Plastics Material and Resin Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
•UV stabilizer in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.72/gAngene Chemical

CountryChina (registered: Hong Kong)

Pack$72.00 / 100 g

Purity98%

Vendors12 available

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

11 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$0.83	100 g	98%
A2B Chem LLC	United States	$1.15	500 g	97%
Combi-Blocks, Inc.	United States	$1.36	500 g	98%
AA BLOCKS	United States	$1.51	500 g	97%
MedChemExpress MCE	Sweden	$1.61	500 g	—
Ambeed, Inc.	United States	$1.95	100 g	97%
AstaTech (2 weeks)	United States	$10.40	25 g	95%
AK Scientific Specialized	United States	$12.00	1 g	95%
AK Scientific, Inc.	United States	$22.00	1 g	98%
Angene International Limited	United States	$70.00	1 g	98%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS70331-94-1

PubChem CID93405

DTXSIDDTXSID1052450

FormulaC40H60N2O8

Mol. Weight696.9 g/mol

SMILESCC(C)(C)C1=CC(=CC(=C1O)C(C)(C)C)CCC(=O)OCCNC(=O)C(=O)NCCOC(=O)CCC2=CC(=C(C(=C2)C(C)(C)C)O)C(C)(C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID1052450Retrieved 2026-04-06
PubChem · compound 93405Retrieved 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

2,2'-Oxamidodiethyl bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (CAS 70331-94-1) https://chemicalindependence.com/chemical/70331-94-1/ EPA CompTox (DSSTox): DTXSID1052450. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1052450 PubChem: 93405. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/93405 EPA Chemical Data Reporting: 70331-94-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 70331-94-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting