3-Methyl-5-(2-thienyl)-1H-pyrazole 3-methyl-5-(thiophen-2-yl)-1H-pyrazole 31618-80-1 CAS 31618-80-1

Purity 97%+In StockPharmaceutical Standards
CAS No.31618-80-1
Molecular FormulaC8H8N2S
Molecular Weight164.23 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-Methyl-5-(2-thienyl)-1H-pyrazole
3-methyl-5-(thiophen-2-yl)-1H-pyrazole
31618-80-1 CAS 31618-80-1 chemical structure

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.

CATO supplies 3-Methyl-5-(2-thienyl)-1H-pyrazole 3-methyl-5-(thiophen-2-yl)-1H-pyrazole 31618-80-1 (CAS 31618-80-1), a certified reference material (molecular formula C8H8N2S, MW 164.23 g/mol) for analytical method development and quality control.

Based on its molecular formula C8H8N2S, 3-Methyl-5-(2-thienyl)-1H-pyrazole 3-methyl-5-(thiophen-2-yl)-1H-pyrazole 31618-80-1 contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 164.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

As a certified reference material (CRM), 3-Methyl-5-(2-thienyl)-1H-pyrazole 3-methyl-5-(thiophen-2-yl)-1H-pyrazole 31618-80-1 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

Molecular FormulaC8H8N2S
Molecular Weight164.23 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1966
Nitrogen Atoms2
Sulfur Atoms1

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