1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole CAS 1269292-14-9

Purity 97%+In StockPharmaceutical Standards
CAS No.1269292-14-9
Molecular FormulaC13H9N3O2S
Molecular Weight271.29 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole CAS 1269292-14-9 chemical structure

Description

The occurrence of 1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole (CAS 1269292-14-9), a certified reference material (molecular formula C13H9N3O2S, MW 271.29 g/mol) for analytical method development and quality control.

Based on its molecular formula C13H9N3O2S, 1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 271.29 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).

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.

As a certified reference material (CRM), 1-(2-Nitrophenyl)-5-(thiophen-3-yl)-1H-pyrazole 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 FormulaC13H9N3O2S
Molecular Weight271.29 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Nitrogen Atoms3
Sulfur Atoms1

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