4-Hydroxypyridine-d5 CAS 45503-33-1

Purity 97%+In StockPharmaceutical Standards
CAS No.45503-33-1
Molecular Formula-
Molecular Weight100.13 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4-Hydroxypyridine-d5 CAS 45503-33-1 chemical structure

Description

4-Hydroxypyridine-d5 (CAS 45503-33-1), molecular formula C5D5NO and molecular weight 100.13 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 4-Hydroxypyridine-d5 (C5D5NO) is characterized by deuterium isotope labeling, an amide group, a hydroxyl group, an ether linkage. 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).

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 manufactures 4-Hydroxypyridine-d5 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 FormulaC5D5NO
Molecular Weight100.13 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.5
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1970
Nitrogen Atoms1

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