1-Methyl-3-(thiophen-2-yl)-1h-pyrazole-4-carbaldehyde CAS 689251-87-4

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Methyl-3-(thiophen-2-yl)-1h-pyrazole-4-carbaldehyde.

1-Methyl-3-(thiophen-2-yl)-1h-pyrazole-4-carbaldehyde (CAS 689251-87-4) is a high-purity analytical reference standard with the molecular formula C9H8N2OS and a molecular weight of 192.24 g/mol.

The molecular framework of 1-Methyl-3-(thiophen-2-yl)-1h-pyrazole-4-carbaldehyde (C9H8N2OS) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. 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).

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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