2-Ethynyl-1H-imidazole CAS 57121-47-8

Purity 97%+In StockPharmaceutical Standards
CAS No.57121-47-8
Molecular FormulaC5H4N2
Molecular Weight92.10 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-Ethynyl-1H-imidazole CAS 57121-47-8 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Ethynyl-1H-imidazole.

2-Ethynyl-1H-imidazole (CAS 57121-47-8) is a high-purity analytical reference standard with the molecular formula C5H4N2 and a molecular weight of 92.10 g/mol.

The molecular framework of 2-Ethynyl-1H-imidazole (C5H4N2) 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. 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC5H4N2
Molecular Weight92.10 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.)1973
Nitrogen Atoms2

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