N-Isopropylphthalimide

CAS 304-17-6

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.

Import volumeZero

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 Zero
2019: US production 624.8K lb · Imports Zero

EPA-registered manufacturers (2)

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

Dystar

Piedmont Chemical Industries I

Why It Matters

Sectors

Textiles

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 1 sector as 2 functional roles.

•Swelling agent in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Textiles, apparel, and leather manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$2.32/gA2B Chem LLC

CountryUnited States

Pack$232.00 / 100 g

Purity98%

Vendors14 available

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

13 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$2.50	100 g	98%
Angene Chemical	China → Hong Kong	$2.59	100 g	98%
AA BLOCKS	United States	$2.72	25 g	98%
BLD Pharmatech Co., Limited	United States	$2.85	100 g	97%
BLD Pharmatech Ltd.	China	$2.85	100 g	97%
Ambeed, Inc.	United States	$2.85	100 g	97%
Combi-Blocks, Inc.	United States	$2.85	100 g	95%
BLD Pharmatech GmbH	Germany	$3.40	25 g	97%
AstaTech (2 weeks)	United States	$9.04	25 g	95%
Angene International Limited	United States	$14.28	25 g	98%
TargetMol Chemicals	China → United States	$2735.00	200 mg	99.94%
Molnova	China	$3474.00	500 mg	99%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS304-17-6

PubChem CID67535

DTXSIDDTXSID6044644

FormulaC11H11NO2

Mol. Weight189.21 g/mol

SMILESCC(C)N1C(=O)C2=CC=CC=C2C1=O

Data Sources

EPA CompTox (DSSTox) · DTXSID6044644Retrieved 2026-04-06
PubChem · compound 67535Retrieved 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

N-Isopropylphthalimide (CAS 304-17-6) https://chemicalindependence.com/chemical/304-17-6/ EPA CompTox (DSSTox): DTXSID6044644. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6044644 PubChem: 67535. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/67535 EPA Chemical Data Reporting: 304-17-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 304-17-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting