5H-[1,2,3]Triazolo[4,5-d]pyrimidine CAS 273-38-1

Purity 97%+In StockPharmaceutical Standards
CAS No.273-38-1
Molecular FormulaC4H3N5
Molecular Weight121.10 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5H-[1,2,3]Triazolo[4,5-d]pyrimidine CAS 273-38-1 chemical structure

Description

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 supplies 5H-[1,2,3]Triazolo[4,5-d]pyrimidine (CAS 273-38-1), a certified reference material (molecular formula C4H3N5, MW 121.10 g/mol) for analytical method development and quality control.

The molecular framework of 5H-[1,2,3]Triazolo[4,5-d]pyrimidine (C4H3N5) 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).

CATO manufactures 5H-[1,2,3]Triazolo[4,5-d]pyrimidine 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 FormulaC4H3N5
Molecular Weight121.10 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)6.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Nitrogen Atoms5

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