4-Mercaptopicolinic acid CAS 18103-74-7

Purity 97%+In StockPharmaceutical Standards
CAS No.18103-74-7
Molecular FormulaC6H5NO2S
Molecular Weight155.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Mercaptopicolinic acid CAS 18103-74-7 chemical structure

Description

CATO manufactures 4-Mercaptopicolinic acid 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.

4-Mercaptopicolinic acid (CAS 18103-74-7) is a high-purity analytical reference standard with the molecular formula C6H5NO2S and a molecular weight of 155.17 g/mol.

Based on its molecular formula C6H5NO2S, 4-Mercaptopicolinic 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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.

Physical & Chemical Properties

Molecular FormulaC6H5NO2S
Molecular Weight155.17 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Nitrogen Atoms1
Sulfur Atoms1

Related Mercaptopicolinic Standards

Recommended Standards

Why CATO?