4,4'-Isopropylidenebis(2-allylphenol)

CAS 1745-89-7

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$72M

Import volumeZero

Top sourceIndia 30%

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 290729 · basket

EPA reports by year

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

These shares come from HS customs code 290729, which covers 82 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).

IN 30%IndiaDE 19%GermanyCN 16%ChinaJP 11%JapanIT 7%Italy

Austria
United Kingdom
Denmark
Canada
Colombia
New Zealand
Poland
Netherlands
Ukraine

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

Huntsman

Kansas Holdco 1

Why It Matters

Sectors

ConstructionCore 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 All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant
•Intermediate in Adhesive Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.09/gChemscene

CountryUnited States

Pack$94.00 / 1 kg

PurityNot recorded

Vendors9 available

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

8 more vendors

Vendor	Country	$/g	Pack	Purity
BLD Pharmatech Ltd.	China	$0.10	1 kg	90%
BLD Pharmatech GmbH	Germany	$0.11	500 g	90%
BLD Pharmatech Co., Limited	United States	$0.15	100 g	90%
Ambeed, Inc.	United States	$0.15	100 g	90%
Fluorochem EU	Germany	$0.17	100 g	95%
Fluorochem UK	United Kingdom	$0.17	100 g	95%
AK Scientific, Inc.	United States	$2.72	25 g	85%
Labotest KG	Germany	$217.80	5000 mg	90%

Chemical Identity

CAS1745-89-7

PubChem CID74457

DTXSIDDTXSID1061942

FormulaC21H24O2

Mol. Weight308.4 g/mol

SMILESCC(C)(C1=CC(=C(C=C1)O)CC=C)C2=CC(=C(C=C2)O)CC=C

Data Sources

EPA CompTox (DSSTox) · DTXSID1061942Retrieved 2026-04-06
PubChem · compound 74457Retrieved 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

4,4'-Isopropylidenebis(2-allylphenol) (CAS 1745-89-7) https://chemicalindependence.com/chemical/1745-89-7/ EPA CompTox (DSSTox): DTXSID1061942. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1061942 PubChem: 74457. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/74457 EPA Chemical Data Reporting: 1745-89-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1745-89-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290729 for CAS 1745-89-7. Reporting year: 2024. https://usatrade.census.gov/