N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-((2-methoxy-5-methyl-4-((methylamino)sulphonyl)phenyl)azo)naphthalene-2-carboxamide

CAS 51920-12-8

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

US productionZero

Import volumeCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

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. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production Zero · Imports Confidential
2019: US production Confidential · Imports Confidential

EPA-registered importers (2)

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

Heubach Holding S R L · LU Luxembourg

Heubach Holding Usa

Why It Matters

Sectors

Metals & MiningPaper & Printing

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 2 sectors as 1 functional role.

•Pigment in Miscellaneous Manufacturing (100%)Processing—incorporation into article
•Pigment in Printing Ink Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.88/gAaron Chemicals LLC

CountryHong Kong

Pack$88.00 / 100 g

PurityNot recorded

Vendors2 available

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

1 more vendor

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$6.56	25 g	—

Chemical Identity

CAS51920-12-8

PubChem CID104012

DTXSIDDTXSID2068686

FormulaC27H24N6O6S

Mol. Weight560.6 g/mol

SMILESCC1=CC(=C(C=C1S(=O)(=O)NC)OC)N=NC2=C(C(=CC3=CC=CC=C32)C(=O)NC4=CC5=C(C=C4)NC(=O)N5)O

Data Sources

EPA CompTox (DSSTox) · DTXSID2068686Retrieved 2026-04-06
PubChem · compound 104012Retrieved 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-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-((2-methoxy-5-methyl-4-((methylamino)sulphonyl)phenyl)azo)naphthalene-2-carboxamide (CAS 51920-12-8) https://chemicalindependence.com/chemical/51920-12-8/ EPA CompTox (DSSTox): DTXSID2068686. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2068686 PubChem: 104012. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/104012 EPA Chemical Data Reporting: 51920-12-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 51920-12-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting