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2H-3,1-Benzoxazine-2,4(1H)-dione

CAS 118-48-9

U.S. production volumes are classified as confidential business information.

Molecular structure of 118-48-9
US productionCBI
Import value, 2024$6.4B
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. 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 293499 · basket

EPA reports by year
2023
US production Confidential · 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
Domestic parents -- activity not disclosed (2)
Archroma U.S
Wego Chemical Group
EPA-registered importers (2)
Syensqo Sa · BE Belgium
Solvay

Why It Matters

Sectors
Core Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

  • •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.02/gAaron Chemicals LLC
CountryHong Kong
Pack$11.00 / 500 g
PurityNot recorded
Vendors31 available

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

30 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.03500 g—
BLD Pharmatech GmbHGermany$0.031 kg98%
BLD Pharmatech Ltd.China$0.031 kg98%
A2B Chem LLCUnited States$0.03500 g97%
AA BLOCKSUnited States$0.04500 g97%
ChemsceneUnited States$0.051 kg—
SynthonixUnited States$0.06500 g95%
Angene International LimitedUnited States$0.08500 g96%
Fluorochem EUGermany$0.11100 g96%
BLD Pharmatech Co., LimitedUnited States$0.111 kg98%
Ambeed, Inc.United States$0.111 kg98%
Fluorochem UKUnited Kingdom$0.11100 g96%
ALFA AESARGermany$0.142.5 kg97%
Combi-Blocks, Inc.United States$0.251 kg97%
MedChemExpress MCESweden$0.26500 g99.26%
Sigma-Aldrich (Rush Stock)Germany$0.27500 g96%
Sigma-AldrichGermany$0.27500 g96%
AK Scientific SpecializedUnited States$0.29500 g95%
AstaTech, IncUnited States$0.30500 g95%
AK Scientific, Inc.United States$0.41500 g97%
InterbioscreenHong Kong$24.0010 g95%
Labotest KGGermany$217.805000 mg90%
SpecsNetherlands$1476.2050 mg90%
Key Organics Ltd.United Kingdom$1960.00100 mg90%
Otava, Ltd.Ukraine$2280.0050 mg95%
Otava, Ltd. (2 weeks)Ukraine$2724.0050 mg95%
ChemDiv, Inc.United States$4070.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg—
MedKoo Biosciences, IncUnited States$9000.0050 mg98%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS118-48-9
PubChem CID8359
DTXSIDDTXSID6026955
FormulaC8H5NO3
Mol. Weight163.13 g/mol
SMILESC1=CC=C2C(=C1)C(=O)OC(=O)N2

Data Sources

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Brief citations

2H-3,1-Benzoxazine-2,4(1H)-dione (CAS 118-48-9) https://chemicalindependence.com/chemical/118-48-9/ EPA CompTox (DSSTox): DTXSID6026955. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6026955 PubChem: 8359. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8359 EPA Chemical Data Reporting: 118-48-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 118-48-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293499 for CAS 118-48-9. Reporting year: 2024. https://usatrade.census.gov/