Ethyl 5,5-diphenyl-2-isoxazoline-3-carboxylate

CAS 163520-33-0

EPA’s 2023 records show zero U.S. production of this chemical.

Molecular structure of 163520-33-0
US productionZero
Import value, 2024$6.4B
Import volumeCBI
Top sourceSingapore 36%

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. 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 293499 · basket

EPA reports by year
2023
US production Zero · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India
EPA-registered importers (4)
Basf Se · DE Germany
Bayer Ag · DE Germany
Basf
Bayer Us Holding

Why It Matters

Sectors
Agriculture
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

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

Vendor Pricing

$0.91/gAK Scientific Specialized
CountryUnited States
Pack$91.00 / 100 g
Purity95%
Vendors11 available

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

Chemical Identity

CAS163520-33-0
PubChem CID6451155
DTXSIDDTXSID7040360
FormulaC18H17NO3
Mol. Weight295.3 g/mol
SMILESCCOC(=O)C1=NOC(C1)(C2=CC=CC=C2)C3=CC=CC=C3

Data Sources

Brief citations

Ethyl 5,5-diphenyl-2-isoxazoline-3-carboxylate (CAS 163520-33-0) https://chemicalindependence.com/chemical/163520-33-0/ EPA CompTox (DSSTox): DTXSID7040360. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID7040360 PubChem: 6451155. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6451155 EPA Chemical Data Reporting: 163520-33-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 163520-33-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293499 for CAS 163520-33-0. Reporting year: 2024. https://usatrade.census.gov/