Ammonium hydrogenphosphite CAS 51503-61-8

Purity 97%+In StockPharmaceutical Standards
CAS No.51503-61-8
Molecular FormulaHO3P
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ammonium hydrogenphosphite CAS 51503-61-8 chemical structure

Description

Ammonium hydrogenphosphite (CAS 51503-61-8) is a high-purity analytical reference standard with the molecular formula HO3PH4N and a molecular weight of 98.02 g/mol.

The molecular framework of Ammonium hydrogenphosphite (HO3PH4N) is characterized by a phosphonate 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaHO3P 2*H4N
Molecular Weight98.02 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
CAS Registry Year (est.)1971
Nitrogen Atoms1

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