5,7-Dioxo-4,5-dihydrothiazolo[4,5-d]pyrimidin-6(7H)-yl benzenesulfonate CAS 18903-21-4

Purity 97%+In StockPharmaceutical Standards
CAS No.18903-21-4
Molecular FormulaC11H7N3O5S2
Molecular Weight325.32 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5,7-Dioxo-4,5-dihydrothiazolo[4,5-d]pyrimidin-6(7H)-yl benzenesulfonate CAS 18903-21-4 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 325.32 g/mol gives 5,7-Dioxo-4,5-dihydrothiazolo[4,5-d]pyrimidin-6(7H)-yl benzenesulfonate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 5,7-Dioxo-4,5-dihydrothiazolo[4,5-d]pyrimidin-6(7H)-yl benzenesulfonate (CAS 18903-21-4), a certified reference material (molecular formula C11H7N3O5S2, MW 325.32 g/mol) for analytical method development and quality control.

Structurally, 5,7-Dioxo-4,5-dihydrothiazolo[4,5-d]pyrimidin-6(7H)-yl benzenesulfonate (C11H7N3O5S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 325.32 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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), 5,7-Dioxo-4,5-dihydrothiazolo[4,5-d]pyrimidin-6(7H)-yl benzenesulfonate 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 FormulaC11H7N3O5S2
Molecular Weight325.32 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Nitrogen Atoms3
Sulfur Atoms2

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