1-Methyl-1h-pyrazol-5-ol hydrochloride CAS 33641-16-6

Purity 97%+In StockPharmaceutical Standards
CAS No.33641-16-6
Molecular FormulaC4H6N2O
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Methyl-1h-pyrazol-5-ol hydrochloride CAS 33641-16-6 chemical structure

Description

The molecular framework of 1-Methyl-1h-pyrazol-5-ol hydrochloride (C4H6N2OHCl) is characterized by an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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.

1-Methyl-1h-pyrazol-5-ol hydrochloride (CAS 33641-16-6) is a high-purity analytical reference standard with the molecular formula C4H6N2OHCl and a molecular weight of 134.56 g/mol.

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 manufactures 1-Methyl-1h-pyrazol-5-ol hydrochloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC4H6N2O HCl
Molecular Weight134.56 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1966
Halogen ContentCl-containing
Nitrogen Atoms2

Recommended Standards

Why CATO?