4-(4-Chlorophenyl)-5-(ethylsulfonyl)-1H-thieno[2,3-c]pyrazol-3-amine CAS 1707668-34-5

Description

The occurrence of 4-(4-Chlorophenyl)-5-(ethylsulfonyl)-1H-thieno[2,3-c]pyrazol-3-amine is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

4-(4-Chlorophenyl)-5-(ethylsulfonyl)-1H-thieno[2,3-c]pyrazol-3-amine (CAS 1707668-34-5), molecular formula C13H12ClN3O2S2 and molecular weight 341.84 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4-(4-Chlorophenyl)-5-(ethylsulfonyl)-1H-thieno[2,3-c]pyrazol-3-amine (C13H12ClN3O2S2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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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