6-Chloro-2-(2-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-7(1H)-one CAS 478258-95-6

Description

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.

6-Chloro-2-(2-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-7(1H)-one (CAS 478258-95-6), molecular formula C17H15ClN4OS and molecular weight 358.85 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 6-Chloro-2-(2-(2,5-dimethyl-1H-pyrrol-1-yl)thiophen-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-7(1H)-one (C17H15ClN4OS) contains a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 358.85 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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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