5-(P-tolyl)thiophene-2-carboxylic acid CAS 40808-21-7

Description

Compared with other compounds in its class, the molecular weight of 218.27 g/mol gives 5-(P-tolyl)thiophene-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

5-(P-tolyl)thiophene-2-carboxylic acid (CAS 40808-21-7) is a high-purity analytical reference standard with the molecular formula C12H10O2S and a molecular weight of 218.27 g/mol.

Structurally, 5-(P-tolyl)thiophene-2-carboxylic acid (C12H10O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 218.27 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

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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