0SWH68IQ5W 81-08-3 2-Sulfobenzoic acid cyclic anhydride Benzoic acid, o-sulfo-, cyclic anhydride (8CI) 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide 2-Sulphobenzoic anhydride Benzoic acid, 2-sulfo-, cyclic anhydride EINECS 201-322-6 NSC 11208 o-Sulfobenzoic acid anhydride o-Sulfobenzoic acid, cyclic anhydride Sulfobenzoic anhydride UNII-0SWH68IQ5W CAS 81-08-3

Purity 97%+In StockPharmaceutical Standards
CAS No.81-08-3
Molecular FormulaC7H4O4S
Molecular Weight184.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

0SWH68IQ5W 81-08-3 2-Sulfobenzoic acid cyclic anhydride Benzoic acid, o-sulfo-, cyclic anhydride (8CI) 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide 2-Sulphobenzoic anhydride Benzoic acid, 2-sulfo-, cyclic anhydride EINECS 201-322-6 NSC 11208 o-Sulfobenzoic acid anhydride o-Sulfobenzoic acid, cyclic anhydride Sulfobenzoic anhydride UNII-0SWH68IQ5W CAS 81-08-3 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 0SWH68IQ5W 81-08-3 2-Sulfobenzoic acid cyclic anhydride Benzoic acid, o-sulfo-, cyclic anhydride (8CI) 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide 2-Sulphobenzoic anhydride Benzoic acid, 2-sulfo-, cyclic anhydride EINECS 201-322-6 NSC 11208 o-Sulfobenzoic acid anhydride o-Sulfobenzoic acid, cyclic anhydride Sulfobenzoic anhydride UNII-0SWH68IQ5W.

CATO supplies 0SWH68IQ5W 81-08-3 2-Sulfobenzoic acid cyclic anhydride Benzoic acid, o-sulfo-, cyclic anhydride (8CI) 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide 2-Sulphobenzoic anhydride Benzoic acid, 2-sulfo-, cyclic anhydride EINECS 201-322-6 NSC 11208 o-Sulfobenzoic acid anhydride o-Sulfobenzoic acid, cyclic anhydride Sulfobenzoic anhydride UNII-0SWH68IQ5W (CAS 81-08-3), a certified reference material (molecular formula C7H4O4S, MW 184.17 g/mol) for analytical method development and quality control.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 0SWH68IQ5W 81-08-3 2-Sulfobenzoic acid cyclic anhydride Benzoic acid, o-sulfo-, cyclic anhydride (8CI) 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide 2-Sulphobenzoic anhydride Benzoic acid, 2-sulfo-, cyclic anhydride EINECS 201-322-6 NSC 11208 o-Sulfobenzoic acid anhydride o-Sulfobenzoic acid, cyclic anhydride Sulfobenzoic anhydride UNII-0SWH68IQ5W is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 184.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 0SWH68IQ5W 81-08-3 2-Sulfobenzoic acid cyclic anhydride Benzoic acid, o-sulfo-, cyclic anhydride (8CI) 3H-2,1-Benzoxathiol-3-one, 1,1-dioxide 2-Sulphobenzoic anhydride Benzoic acid, 2-sulfo-, cyclic anhydride EINECS 201-322-6 NSC 11208 o-Sulfobenzoic acid anhydride o-Sulfobenzoic acid, cyclic anhydride Sulfobenzoic anhydride UNII-0SWH68IQ5W meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC7H4O4S
Molecular Weight184.17 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Sulfur Atoms1

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