Naphth[1,2-d][1,2,3]oxadiazole-5-sulfonic acid, 7-nitro-

CAS 84-91-3

Molecular structure of 84-91-3
US productionNot reported
Import value, 2024$6.4B
Top sourceSingapore 36%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production is reported production, not a complete census of factories. 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

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

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Vendor Pricing

$89.40/gAK Scientific, Inc.
CountryUnited States
Pack$447.00 / 5 g
Purity95%
Vendors4 available

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

Chemical Identity

CAS84-91-3
PubChem CIDNot recorded
DTXSIDDTXSID2058912
FormulaC10H5N3O6S
Mol. Weight295.23 g/mol
SMILESOS(=O)(=O)C1=CC2=C(N=NO2)C2=CC=C(C=C12)[N+]([O-])=O

Data Sources

Brief citations

Naphth[1,2-d][1,2,3]oxadiazole-5-sulfonic acid, 7-nitro- (CAS 84-91-3) https://chemicalindependence.com/chemical/84-91-3/ EPA TSCA Inventory: CAS 84-91-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293499 for CAS 84-91-3. Reporting year: 2024. https://usatrade.census.gov/