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Home/Compounds/CAS 81-08-3
Formula C7H4O4SMW 184.17Research-use catalog entryCOA/SDS by request

2-Sulfobenzoic acid cyclic anhydride

CAS Number: 81-08-3

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Loading RDKit molecule structure...
InChIKey: NCYNKWQXFADUOZ-UHFFFAOYSA-NC7H4O4S | MW 184.17

Chemical Absolute Identifiers

CAS Number

81-08-3

PubChem CID

65729

Molecular Formula

C7H4O4S

Molecular Weight

184.17 g/mol

Exact Mass

183.98303

InChIKey

NCYNKWQXFADUOZ-UHFFFAOYSA-N

IUPAC Name

1,1-dioxo-2,1lambda6-benzoxathiol-3-one

SMILES String

C1=CC=C2C(=C1)C(=O)OS2(=O)=O

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

2-Sulfobenzoic acid cyclic anhydride (CAS 81-08-3) is listed in the Advanced Chemicals portfolio, with molecular formula C7H4O4S and molecular weight 184. 17 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.

Documentation needs

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Applications & Classification

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

Safety & Handling

Handling & Storage

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PPE

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First Aid

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Stability / Reactivity

  • Reactivity and stability.
  • Carbon monoxide, carbon dioxide, sulfur oxides.

Disposal

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Fire Fighting

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Accidental Release

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Preliminary Safety Reference

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Names & Synonyms / External Identifiers

Chemical Name

2-Sulfobenzoic acid cyclic anhydride

Names & Synonyms

o-Sulfobenzoic anhydrideo-Sulfobenzoic acid anhydrideo-Sulfobenzoic acid, cyclic anhydrideBenzoic acid, o-sulfo-, cyclic anhydrideBenzoic acid, 2-sulfo-, cyclic anhydride
Show all synonyms
2-sulfobenzoic cyclic anhydride2-Sulfobenzoic anhydrideSulfobenzoic anhydride3H-2,1-Benzoxathiol-3-one, 1,1-dioxide3H-Benzo[c][1,2]oxathiol-3-one 1,1-dioxide2,1-Benzoxathiol-3-one-1,1-dioxide3H-2,1-benzoxathiol-3-one 1,1-dioxide3H-2, 1,1-dioxidebenzo[c]1,2-oxathiolene-1,1,3-trione2-Sulfobenzoicanhydride2-Sulphobenzoic anhydrideSulfobenzoicanhydride3H-2,1lambda6-benzoxathiole-1,1,3-trione1,1-dioxobenzo[c]oxathiol-3-one
External Identifiers
EC NUMBER: 201-322-6DSSTOX SUBSTANCE ID: DTXSID4038681UNII: 0SWH68IQ5WWIKIDATA ID: Q27037740
Experimental Spectrum References
13C NMR Spectra1D NMR Spectra1H NMR SpectraATR-IR SpectraFTIR SpectraRaman SpectraUV-VIS Spectra

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

Spiro(3H-2,1-benzoxathiole-3,9'-(9H)xanthene)-3',4',5',6'-tetrol, 1,1-dioxideCAS 32638-88-3
AcesulfameCAS 33665-90-6
3-Benzyl-1,2-oxathiolane 2,2-dioxideCAS 75732-43-3

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 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 acidCAS 1018144-00-72-(3-Cyclopropyl-6-isopropyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid

RFQ questions for CAS 81-08-3

What are the key identifiers for 2-Sulfobenzoic acid cyclic anhydride (CAS 81-08-3)?

2-Sulfobenzoic acid cyclic anhydride is identified by CAS 81-08-3, with molecular formula C7H4O4S, molecular weight 184.17, InChIKey NCYNKWQXFADUOZ-UHFFFAOYSA-N.

Can I request a COA for CAS 81-08-3?

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

Can I request supplier SDS for 2-Sulfobenzoic acid cyclic anhydride?

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Is CAS 81-08-3 available for quotation?

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