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Home/Compounds/CAS 1689-82-3
Formula C12H10N2OMW 198.22Research-use catalog entryCOA/SDS by request

4-Hydroxyazobenzene

CAS Number: 1689-82-3

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Loading RDKit molecule structure...
InChIKey: BEYOBVMPDRKTNR-UHFFFAOYSA-NC12H10N2O | MW 198.22

Chemical Absolute Identifiers

CAS Number

1689-82-3

PubChem CID

15529

Molecular Formula

C12H10N2O

Molecular Weight

198.22 g/mol

Exact Mass

198.079313

InChIKey

BEYOBVMPDRKTNR-UHFFFAOYSA-N

IUPAC Name

4-phenyldiazenylphenol

SMILES String

C1=CC=C(C=C1)N=NC2=CC=C(C=C2)O

Physical Properties

Melting Point

155–157 °C

pKa

8.2

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

Catalog Facts

Structural features

4-Hydroxyazobenzene (CAS 1689-82-3) is listed in the Advanced Chemicals portfolio, with molecular formula C12H10N2O and molecular weight 198. 22 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
Biological target reference

ChEMBL reports experimental activity evidence for: ATPase family AAA domain-containing protein 5 (Homo sapiens) — 2 assays; Tyrosyl-DNA phosphodiesterase 1 (Homo sapiens) — 2 assays. These records describe research assays and do not establish therapeutic efficacy or clinical use.

ATPase family AAA domain-containing protein 5

Homo sapiens · SINGLE PROTEIN · 2 qualifying assays · 1 documents

Experimental evidence source: ChEMBL

Tyrosyl-DNA phosphodiesterase 1

Homo sapiens · SINGLE PROTEIN · 2 qualifying assays · 1 documents

Experimental evidence source: ChEMBL

Safety & Handling

Safety and handling reference content is available through documentation requests.

For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.

Preliminary Safety Reference

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Safety Reference / SDS Request

Names & Synonyms / External Identifiers

Chemical Name

4-Hydroxyazobenzene

Names & Synonyms

4-Phenylazophenol4-(Phenylazo)phenolp-Phenylazophenolp-HydroxyazobenzeneC.I. Solvent Yellow 7
Show all synonyms
Pirocard Green 491Organol Yellow APPhenol, p-(phenylazo)-p-BenzeneazophenolAzobenzene, 4-hydroxy-Zlut rozpoustedlova 7CI Solvent Yellow 7CI 11800C.I. 118004-(phenyldiazenyl)phenolSolvent Yellow 7Phenol, 4-(phenylazo)-Phenol, 4-(2-phenyldiazenyl)-p-(Phenylazo)phenol
External Identifiers
EC NUMBER: 216-880-6DSSTOX SUBSTANCE ID: DTXSID3022160DSSTOX SUBSTANCE ID: DTXSID70942923CHEMBL ID: CHEMBL1525953CHEMBL ID: CHEMBL79759CHEBI ID: CHEBI:82475UNII: VX4306NSH1KEGG ID: C19433WIKIDATA ID: Q9552900
Experimental Spectrum References
13C NMR SpectraATR-IR Spectra — Bio-Rad Laboratories, Inc.FTIR Spectra — Bio-Rad Laboratories, Inc.

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

4,4'-DihydroxyazobenzeneCAS 2050-16-0
4'-Hydroxyazobenzene-4-carboxylic AcidCAS 105299-45-4
2-(4-Hydroxyphenylazo)benzoic acidCAS 1634-82-8
4-AminoazobenzeneCAS 25548-34-9
4-Phenylazobenzoic acidCAS 1562-93-2

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 2050-16-04,4'-DihydroxyazobenzeneCAS 105299-45-44'-Hydroxyazobenzene-4-carboxylic AcidCAS 1634-82-82-(4-Hydroxyphenylazo)benzoic acidCAS 25548-34-94-AminoazobenzeneCAS 1562-93-24-Phenylazobenzoic acidCAS 10083-24-6PiceatannolCAS 1086138-48-81,3-Bis((r)-4-isopropyl-4,5-dihydrooxazol-2-yl)benzeneCAS 1148-79-42,2':6',2''-TerpyridineCAS 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 acid

RFQ questions for CAS 1689-82-3

What are the key identifiers for 4-Hydroxyazobenzene (CAS 1689-82-3)?

4-Hydroxyazobenzene is identified by CAS 1689-82-3, with molecular formula C12H10N2O, molecular weight 198.22, InChIKey BEYOBVMPDRKTNR-UHFFFAOYSA-N.

Does CAS 1689-82-3 have reported biological target evidence?

ChEMBL contains qualifying experimental assay evidence associated with ATPase family AAA domain-containing protein 5, Tyrosyl-DNA phosphodiesterase 1. These records do not establish therapeutic efficacy or clinical use.

Can I request a COA for CAS 1689-82-3?

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

Can I request supplier SDS for 4-Hydroxyazobenzene?

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

Is CAS 1689-82-3 available for quotation?

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

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