Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate CAS 164928-01-2

Purity 97%+In StockPharmaceutical Standards
CAS No.164928-01-2
Molecular FormulaC5H8N2O2
Molecular Weight128.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate CAS 164928-01-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 128.13 g/mol gives Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate (CAS 164928-01-2) is a high-purity analytical reference standard with the molecular formula C5H8N2O2 and a molecular weight of 128.13 g/mol.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate is typically white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 128.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

CATO manufactures Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate 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 FormulaC5H8N2O2
Molecular Weight128.13 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)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)2004
Nitrogen Atoms2

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