2,5-Dimethylbenzenesulfonic acid dihydrate CAS 66905-17-7

Description

Compared with other compounds in its class, the molecular weight of 204.24 g/mol gives 2,5-Dimethylbenzenesulfonic acid dihydrate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

2,5-Dimethylbenzenesulfonic acid dihydrate (CAS 66905-17-7) is a high-purity analytical reference standard with the molecular formula C8H10O3SH2O and a molecular weight of 204.24 g/mol.

Structurally, 2,5-Dimethylbenzenesulfonic acid dihydrate (C8H10O3SH2O) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 204.24 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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