Isothiazole-3-carbaldehyde CAS 34490-97-6

Purity 97%+In StockPharmaceutical Standards
CAS No.34490-97-6
Molecular FormulaC4H3NOS
Molecular Weight113.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Isothiazole-3-carbaldehyde CAS 34490-97-6 chemical structure

Description

Isothiazole-3-carbaldehyde (CAS 34490-97-6), molecular formula C4H3NOS and molecular weight 113.14 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, Isothiazole-3-carbaldehyde (C4H3NOS) contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 113.14 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 Isothiazole-3-carbaldehyde 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 FormulaC4H3NOS
Molecular Weight113.14 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1966
Nitrogen Atoms1
Sulfur Atoms1

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