Isothiazolo[4,3-d]pyrimidine CAS 7130-83-8

Purity 97%+In StockPharmaceutical Standards
CAS No.7130-83-8
Molecular FormulaC5H3N3S
Molecular Weight137.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Isothiazolo[4,3-d]pyrimidine CAS 7130-83-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 137.16 g/mol gives Isothiazolo[4,3-d]pyrimidine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Isothiazolo[4,3-d]pyrimidine (CAS 7130-83-8), molecular formula C5H3N3S and molecular weight 137.16 g/mol, is a CATO reference standard with documented purity and traceability.

Isothiazolo[4,3-d]pyrimidine (C5H3N3S) contains a nitrile group, sulfur-containing functionality. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

CATO manufactures Isothiazolo[4,3-d]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC5H3N3S
Molecular Weight137.16 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1959
Nitrogen Atoms3
Sulfur Atoms1

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