1-(3-Methyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)ethanone CAS 211988-12-4

Description

Compared with other compounds in its class, the molecular weight of 156.21 g/mol gives 1-(3-Methyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)ethanone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

1-(3-Methyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)ethanone (CAS 211988-12-4), molecular formula C6H8N2OS and molecular weight 156.21 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C6H8N2OS, 1-(3-Methyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)ethanone contains an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 156.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

As a certified reference material (CRM), 1-(3-Methyl-5-thioxo-4,5-dihydro-1H-pyrazol-4-yl)ethanone meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

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