N-(Acetyl-d3)-S-(3,4-dimethylphenyl)-L-cysteine CAS 1331892-61-5

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including N-(Acetyl-d3)-S-(3,4-dimethylphenyl)-L-cysteine.

N-(Acetyl-d3)-S-(3,4-dimethylphenyl)-L-cysteine (CAS 1331892-61-5) is a high-purity analytical reference standard with the molecular formula C13H14D3NO3S and a molecular weight of 270.36 g/mol.

Structurally, N-(Acetyl-d3)-S-(3,4-dimethylphenyl)-L-cysteine (C13H14D3NO3S) contains deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.5, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 270.36 g/mol, it falls into the medium-molecular-weight range. 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.

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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