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Home/Compounds/CAS 25956-17-6
Formula C18H14N2Na2O8S2MW 496.4Research-use catalog entryCOA/SDS by request

E129

CAS Number: 25956-17-6

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Loading RDKit molecule structure...
InChIKey: CEZCCHQBSQPRMU-UHFFFAOYSA-LC18H14N2Na2O8S2 | MW 496.4

Chemical Absolute Identifiers

CAS Number

25956-17-6

PubChem CID

33258

Molecular Formula

C18H14N2Na2O8S2

Molecular Weight

496.4 g/mol

Exact Mass

495.998696

InChIKey

CEZCCHQBSQPRMU-UHFFFAOYSA-L

IUPAC Name

disodium;6-hydroxy-5-[(2-methoxy-5-methyl-4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate

SMILES String

CC1=CC(=C(C=C1S(=O)(=O)[O-])OC)N=NC2=C(C=CC3=C2C=CC(=C3)S(=O)(=O)[O-])O.[Na+].[Na+]

Physical Properties

No physical property values available.

Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.

Catalog Facts

Structural features

E129 (CAS 25956-17-6) is listed in the Advanced Chemicals portfolio, with molecular formula C18H14N2Na2O8S2 and molecular weight 496. 40 g/mol.

Sourcing context

Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.

Research use context

Intended for research building-block and synthetic chemistry workflows; structure-derived tags include nitrogen-containing heterocycle.

Documentation needs

COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.

Applications & Classification

Organic Building BlocksSynthetic ChemistryResearch intermediateCustom synthesis building blockResearch chemical sourcingCustom synthesis and catalog availability reviewCOA, SDS, pricing, and fulfillment workflow

Safety & Handling

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Accidental Release

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Preliminary Safety Reference

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Names & Synonyms / External Identifiers

Chemical Name

E129

Names & Synonyms

Allura Red ACAllura RedAllura red AC dyeFood red 17Food Red No. 40
Show all synonyms
C.I. Food Red 17Curry redFD&C Red No. 40Fancy RedAllura Red 40ALLURA RED C.I.16035Japan Food Red No. 40Japan Red 40CI 16035Red 40Red No. 40FD and C Red No. 40Allura Red AC (E 129)FD & C Red no. 402-Naphthalenesulfonic acid, 6-hydroxy-5-((2-methoxy-5-methyl-4-sulfophenyl)azo)-, disodium salt
External Identifiers
EC NUMBER: 247-368-0DSSTOX SUBSTANCE ID: DTXSID4024436DSSTOX SUBSTANCE ID: DTXSID70860355CHEMBL ID: CHEMBL174821CHEMBL ID: CHEMBL3188816CHEBI ID: CHEBI:172687UNII: WZB9127XOAWIKIDATA ID: Q419895
Literature & Patent References
DOI 10.1016/j.bmcl.2004.01.079Evans Blue and other dyes as protein tyrosine phosphatase inhibitors.PMID 15050628Evans Blue and other dyes as protein tyrosine phosphatase inhibitors.

Documentation & Compliance Facts

Compliance Facts

Shipment review: Required

Documentation available by request

Certificate of Analysis (COA): By request

Supplier Safety Data Sheet (SDS): By request

Purity and pack size confirmation: By request

Availability and lead time review: Confirmed by RFQ

Shipment documentation review: By request

For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference

What happens after RFQ

  1. 1We review the CAS identity, quantity, and documentation request.
  2. 2We check sourcing options, supplier availability, COA/SDS, purity, pack size, and lead time.
  3. 3We review destination and shipment documentation needs when applicable.
  4. 4We follow up with a quotation or clarification request.

Text Reference Cues

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Non-public related references

FD&C yellow 6CAS 2783-94-0
sodium 6-hydroxy-5-phenyldiazenylnaphthalene-2-sulfonateCAS 1934-20-9
Ponceau MXCAS 3761-53-3
Fast Sulphon Black FCAS 3682-47-1
C.I. Solvent Red 80CAS 6358-53-8

Non-public references are shown as text only and do not imply equivalence, availability, or shared use.

Catalog navigation

Related Catalog Entries

Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.

CAS 2783-94-0FD&C yellow 6CAS 1934-20-9sodium 6-hydroxy-5-phenyldiazenylnaphthalene-2-sulfonateCAS 3761-53-3Ponceau MXCAS 3682-47-1Fast Sulphon Black FCAS 6358-53-8C.I. Solvent Red 80CAS 1002310-00-0Tert-butyl 1-(2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethylcarbamateCAS 1005174-17-3(E)-3-(2-Propyl-6-(trifluoromethyl)pyridin-3-yl)acrylic acidCAS 1018125-49-92-(3-Cyclopropyl-6-ethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acidCAS 1018128-07-8Isopropyl 4-chloro-2-methylquinoline-6-carboxylateCAS 1018142-22-76-cyclopropyl-1-(2,2-difluoroethyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid

RFQ questions for CAS 25956-17-6

What are the key identifiers for E129 (CAS 25956-17-6)?

E129 is identified by CAS 25956-17-6, with molecular formula C18H14N2Na2O8S2, molecular weight 496.4, InChIKey CEZCCHQBSQPRMU-UHFFFAOYSA-L.

Can I request a COA for CAS 25956-17-6?

Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.

Can I request supplier SDS for E129?

Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.

Is CAS 25956-17-6 available for quotation?

Availability, pack size, lead time, and pricing are confirmed through RFQ.

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