5-Methyl-4,5-dihydro-1H-pyrazole CAS 1568-20-3

Purity 97%+In StockPharmaceutical Standards
CAS No.1568-20-3
Molecular FormulaC4H8N2
Molecular Weight84.12 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Methyl-4,5-dihydro-1H-pyrazole CAS 1568-20-3 chemical structure

Description

5-Methyl-4,5-dihydro-1H-pyrazole (CAS 1568-20-3), molecular formula C4H8N2 and molecular weight 84.12 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 5-Methyl-4,5-dihydro-1H-pyrazole (C4H8N2) is characterized by a nitrile group. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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), 5-Methyl-4,5-dihydro-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 FormulaC4H8N2
Molecular Weight84.12 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)2.0
CAS Registry Year (est.)1957
Nitrogen Atoms2

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Why CATO?