5-Hydroxy-1-methyl-1h-pyrazole-4-carbonitrile CAS 139347-61-8

Purity 97%+In StockPharmaceutical Standards
CAS No.139347-61-8
Molecular FormulaC5H5N3O
Molecular Weight123.11 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Hydroxy-1-methyl-1h-pyrazole-4-carbonitrile CAS 139347-61-8 chemical structure

Description

5-Hydroxy-1-methyl-1h-pyrazole-4-carbonitrile (CAS 139347-61-8), molecular formula C5H5N3O and molecular weight 123.11 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 5-Hydroxy-1-methyl-1h-pyrazole-4-carbonitrile (C5H5N3O) contains an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 123.11 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 5-Hydroxy-1-methyl-1h-pyrazole-4-carbonitrile 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 FormulaC5H5N3O
Molecular Weight123.11 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)5.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1996
Nitrogen Atoms3

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