2-Pyridin-4-yl-thiazole-4-carboxylic acid 2-(4-pyridyl)thiazole-4-carboxylic acid 2-(4-pyridinyl)-1,3-thiazole-4-carboxylic acid 2-(4-pyridyl)-1,3-thiazole-4-carboxylic acid 2-(pyridin-4-yl)-1,3-thiazole-4-carboxylic acid 21278-86-4 CAS 21278-86-4

Purity 97%+In StockPharmaceutical Standards
CAS No.21278-86-4
Molecular FormulaC9H16N2O2S
Molecular Weight216.30 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Pyridin-4-yl-thiazole-4-carboxylic acid 2-(4-pyridyl)thiazole-4-carboxylic acid 2-(4-pyridinyl)-1,3-thiazole-4-carboxylic acid 2-(4-pyridyl)-1,3-thiazole-4-carboxylic acid 2-(pyridin-4-yl)-1,3-thiazole-4-carboxylic acid 21278-86-4 CAS 21278-86-4 chemical structure

Description

The molecular framework of 2-Pyridin-4-yl-thiazole-4-carboxylic acid 2-(4-pyridyl)thiazole-4-carboxylic acid 2-(4-pyridinyl)-1,3-thiazole-4-carboxylic acid 2-(4-pyridyl)-1,3-thiazole-4-carboxylic acid 2-(pyridin-4-yl)-1,3-thiazole-4-carboxylic acid 21278-86-4 (C9H16N2O2S) is characterized by an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

2-Pyridin-4-yl-thiazole-4-carboxylic acid 2-(4-pyridyl)thiazole-4-carboxylic acid 2-(4-pyridinyl)-1,3-thiazole-4-carboxylic acid 2-(4-pyridyl)-1,3-thiazole-4-carboxylic acid 2-(pyridin-4-yl)-1,3-thiazole-4-carboxylic acid 21278-86-4 (CAS 21278-86-4), molecular formula C9H16N2O2S and molecular weight 216.30 g/mol, is a CATO reference standard with documented purity and traceability.

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC9H16N2O2S
Molecular Weight216.30 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1963
Nitrogen Atoms2
Sulfur Atoms1

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