n-(1h-1,2,4-Triazol-5-yl)nicotinamide CAS 21051-18-3

Purity 97%+In StockPharmaceutical Standards
CAS No.21051-18-3
Molecular FormulaC8H7N5O
Molecular Weight189.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

n-(1h-1,2,4-Triazol-5-yl)nicotinamide CAS 21051-18-3 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 n-(1h-1,2,4-Triazol-5-yl)nicotinamide.

n-(1h-1,2,4-Triazol-5-yl)nicotinamide (CAS 21051-18-3) is a high-purity analytical reference standard with the molecular formula C8H7N5O and a molecular weight of 189.17 g/mol.

Based on its molecular formula C8H7N5O, n-(1h-1,2,4-Triazol-5-yl)nicotinamide contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 189.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC8H7N5O
Molecular Weight189.17 g/mol
AppearancePale yellow to yellow crystalline powder. (faint amine-like odor)
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)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1963
Nitrogen Atoms5

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