4-Methyl-3,5-di-m-tolyl-1H-pyrazole CAS 1159988-71-2

Purity 97%+In StockPharmaceutical Standards
CAS No.1159988-71-2
Molecular FormulaC18H18N2
Molecular Weight262.35 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Methyl-3,5-di-m-tolyl-1H-pyrazole CAS 1159988-71-2 chemical structure

Description

As a certified reference material (CRM), 4-Methyl-3,5-di-m-tolyl-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.

4-Methyl-3,5-di-m-tolyl-1H-pyrazole (CAS 1159988-71-2), molecular formula C18H18N2 and molecular weight 262.35 g/mol, is a CATO reference standard with documented purity and traceability.

4-Methyl-3,5-di-m-tolyl-1H-pyrazole (C18H18N2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

Physical & Chemical Properties

Molecular FormulaC18H18N2
Molecular Weight262.35 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)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1989
Nitrogen Atoms2

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