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Sulisobenzone

Drug ingredient

CAS 4065-45-6

This drug ingredient has classified U.S. production volumes. EPA withholds the number as confidential business information.

Molecular structure of 4065-45-6
US productionCBI
Import value, 2024$175M
Top sourceIndia 48%

At least one company claimed its 2019 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: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291479 · basket

EPA reports by year
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 291479, which covers 95 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IN 48%IndiaCN 20%ChinaMX 19%MexicoDE 10%GermanyFI 2%Finland
EPA-registered importers (1)
Si Group Usa (Usaa)
3 FDA-registered drug labelers
MFCI (Huanggang) Co., Ltd.
Vantage Specialty Ingredients, Inc.
Yidu Huayang Chemical Co., Ltd.

Why It Matters

Sectors
HealthPlastics & Rubber
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •UV stabilizer in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Plastics Material and Resin Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •UV stabilizer in Synthetic Rubber Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Antioxidant in Synthetic Rubber Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.15/gAaron Chemicals LLC
CountryHong Kong
Pack$73.00 / 500 g
Purity98%
Vendors23 available

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

22 more vendors
VendorCountry$/gPackPurity
AA BLOCKSUnited States$0.1710 kg98%
Angene ChemicalChina → Hong Kong$0.17500 g98%
A2B Chem LLCUnited States$0.175 kg98%
BLD Pharmatech GmbHGermany$0.221 kg98%
BLD Pharmatech Ltd.China$0.221 kg98%
BLD Pharmatech Co., LimitedUnited States$0.241 kg98%
Ambeed, Inc.United States$0.241 kg98%
Combi-Blocks, Inc.United States$0.251 kg97%
AK Scientific SpecializedUnited States$0.51100 g95%
AK Scientific, Inc.United States$0.72100 g98%
Fulfilled by MolportLatvia$1.005 g—
Cayman EuropeEstonia$1.02500 g98%
Angene International LimitedUnited States$1.46100 g98%
AstaTech (2 weeks)United States$3.6825 g95%
Sigma-Aldrich (Rush Stock)Germany$9.3710 g97%
Sigma-AldrichGermany$9.3710 g97%
MedChemExpress MCESweden$15.0010 g98%
MedKoo Biosciences, IncUnited States$29.0010 g98%
MolnovaChina$76.00500 mg99%
Labotest KGGermany$217.805000 mg90%
AngeneChina → Hong Kong$4266.6730 mg98%
TimTec, LLCUnited States$9333.3330 mg90%

Chemical Identity

CAS4065-45-6
PubChem CID19988
DTXSIDDTXSID2042436
FormulaC14H12O6S
Mol. Weight308.31 g/mol
SMILESCOC1=C(C=C(C(=C1)O)C(=O)C2=CC=CC=C2)S(=O)(=O)O

Data Sources

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Brief citations

Sulisobenzone (CAS 4065-45-6) https://chemicalindependence.com/chemical/4065-45-6/ EPA CompTox (DSSTox): DTXSID2042436. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2042436 PubChem: 19988. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/19988 EPA Chemical Data Reporting: 4065-45-6. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting FDA National Drug Code directory: CAS 4065-45-6. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 291479 for CAS 4065-45-6. Reporting year: 2024. https://usatrade.census.gov/