Methyl 3-ethynyl-1-methyl-1H-pyrazole-5-carboxylate CAS 19762-24-4

Purity 97%+In StockPharmaceutical Standards
CAS No.19762-24-4
Molecular FormulaC8H8N2O2
Molecular Weight164.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 3-ethynyl-1-methyl-1H-pyrazole-5-carboxylate CAS 19762-24-4 chemical structure

Description

The occurrence of Methyl 3-ethynyl-1-methyl-1H-pyrazole-5-carboxylate is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Methyl 3-ethynyl-1-methyl-1H-pyrazole-5-carboxylate (CAS 19762-24-4), a certified reference material (molecular formula C8H8N2O2, MW 164.16 g/mol) for analytical method development and quality control.

Based on its molecular formula C8H8N2O2, Methyl 3-ethynyl-1-methyl-1H-pyrazole-5-carboxylate contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 164.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.

As a certified reference material (CRM), Methyl 3-ethynyl-1-methyl-1H-pyrazole-5-carboxylate 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 FormulaC8H8N2O2
Molecular Weight164.16 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Nitrogen Atoms2

Related Methyl Standards

Recommended Standards

Why CATO?