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Home/Compounds/CAS 21725-69-9
Formula C7H5NO2MW 135.12Research-use catalog entryCOA/SDS by request

3-Hydroxy-1,2-benzisoxazole

CAS Number: 21725-69-9

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Loading RDKit molecule structure...
InChIKey: QLDQYRDCPNBPII-UHFFFAOYSA-NC7H5NO2 | MW 135.12

Chemical Absolute Identifiers

CAS Number

21725-69-9

PubChem CID

210830

Molecular Formula

C7H5NO2

Molecular Weight

135.12 g/mol

Exact Mass

135.032028

InChIKey

QLDQYRDCPNBPII-UHFFFAOYSA-N

IUPAC Name

1,2-benzoxazol-3-one

SMILES String

C1=CC=C2C(=C1)C(=O)NO2

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

3-Hydroxy-1,2-benzisoxazole (CAS 21725-69-9) is listed in the Advanced Chemicals portfolio, with molecular formula C7H5NO2 and molecular weight 135. 12 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

Heterocyclic 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: D-amino-acid oxidase (Sus scrofa) — 2 assays. These records describe research assays and do not establish therapeutic efficacy or clinical use.

D-amino-acid oxidase

Sus scrofa · SINGLE PROTEIN · 2 qualifying assays · 2 documents · best pChEMBL 6.36

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

3-Hydroxy-1,2-benzisoxazole

Names & Synonyms

benzo[d]isoxazol-3-ol1,2-Benzisoxazol-3(2H)-one1,2-benzoxazol-3-ol3-Hydroxybenzisoxazole1,2-Benzisoxazol-3-ol
Show all synonyms
1,2-Benzisoxazolin-3-onebenzisoxazolonehydroxybenzisoxazole9EW3-hydroxy benzisoxazolebenzo[d]isoxazol-3-one1,2-Benzoxazol-3(2H)-one1,2-Benzisoxazol-3-ol (8CI)SDCCGMLS-0066198.P001
External Identifiers
EC NUMBER: 672-845-9DSSTOX SUBSTANCE ID: DTXSID80176116CHEMBL ID: CHEMBL444173CHEBI ID: CHEBI:194613HMDB ID: HMDB0249006METABOLOMICS WORKBENCH ID: 134189WIKIDATA ID: Q70000112Fr13768
Literature & Patent References
DOI 10.1016/j.ejmech.2021.113379A retrospective overview of PHGDH and its inhibitors for regulating cancer metabolism.PMID 33756126A retrospective overview of PHGDH and its inhibitors for regulating cancer metabolism.DOI 10.1016/j.bmc.2018.02.004Discovery of isatin and 1H-indazol-3-ol derivatives as d-amino acid oxidase (DAAO) inhibitors.PMID 29472125Discovery of isatin and 1H-indazol-3-ol derivatives as d-amino acid oxidase (DAAO) inhibitors.DOI 10.1021/acs.jmedchem.6b01167Challenges and Opportunities in the Development of Serine Synthetic Pathway Inhibitors for Cancer Therapy.PMID 27959531Challenges and Opportunities in the Development of Serine Synthetic Pathway Inhibitors for Cancer Therapy.DOI 10.1021/jm800200uSynthesis and biological evaluation of D-amino acid oxidase inhibitors.PMID 18507366Synthesis and biological evaluation of D-amino acid oxidase 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

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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

6-Methylbenzo[d]isoxazol-3(2H)-oneCAS 66571-26-4
1,2-Benzisoxazol-3(2H)-one, 5-bromo-CAS 65685-50-9
5-Aminobenzo[d]isoxazol-3(2H)-oneCAS 73498-28-9
6-Methoxy-1,2-benzisoxazol-3(2H)-oneCAS 89942-57-4
2,1-Benzisoxazol-3(1H)-oneCAS 31499-90-8

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 66571-26-46-Methylbenzo[d]isoxazol-3(2H)-oneCAS 65685-50-91,2-Benzisoxazol-3(2H)-one, 5-bromo-CAS 73498-28-95-Aminobenzo[d]isoxazol-3(2H)-oneCAS 89942-57-46-Methoxy-1,2-benzisoxazol-3(2H)-oneCAS 31499-90-82,1-Benzisoxazol-3(1H)-oneCAS 89-73-6Salicylhydroxamic AcidCAS 61977-29-56-Chloro-3-hydroxy-1,2-benzisoxazoleCAS 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 acid

RFQ questions for CAS 21725-69-9

What are the key identifiers for 3-Hydroxy-1,2-benzisoxazole (CAS 21725-69-9)?

3-Hydroxy-1,2-benzisoxazole is identified by CAS 21725-69-9, with molecular formula C7H5NO2, molecular weight 135.12, InChIKey QLDQYRDCPNBPII-UHFFFAOYSA-N.

Does CAS 21725-69-9 have reported biological target evidence?

ChEMBL contains qualifying experimental assay evidence associated with D-amino-acid oxidase. These records do not establish therapeutic efficacy or clinical use.

Can I request a COA for CAS 21725-69-9?

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

Can I request supplier SDS for 3-Hydroxy-1,2-benzisoxazole?

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

Is CAS 21725-69-9 available for quotation?

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