3-Mercaptoisonicotinic acid CAS 18103-75-8

Description

Compared with other compounds in its class, the molecular weight of 155.17 g/mol gives 3-Mercaptoisonicotinic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

3-Mercaptoisonicotinic acid (CAS 18103-75-8), molecular formula C6H5NO2S and molecular weight 155.17 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C6H5NO2S, 3-Mercaptoisonicotinic acid contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 155.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

As a certified reference material (CRM), 3-Mercaptoisonicotinic acid 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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com