(2S,2'S)-4,4'-Thiobis(2-aminobutanoic acid) CAS 31982-10-2

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (2S,2'S)-4,4'-Thiobis(2-aminobutanoic acid).

(2S,2'S)-4,4'-Thiobis(2-aminobutanoic acid) (CAS 31982-10-2), molecular formula C8H16N2O4S and molecular weight 236.29 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of (2S,2'S)-4,4'-Thiobis(2-aminobutanoic acid) (C8H16N2O4S) 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.

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

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