Monomethylarsonous Acid CAS 25400-23-1

Purity 97%+In StockPharmaceutical Standards
CAS No.25400-23-1
Molecular FormulaCH5AsO2
Molecular Weight123.97 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Monomethylarsonous Acid CAS 25400-23-1 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 Monomethylarsonous Acid.

Monomethylarsonous Acid (CAS 25400-23-1) is a high-purity analytical reference standard with the molecular formula CH5AsO2 and a molecular weight of 123.97 g/mol.

Based on its molecular formula CH5AsO2, Monomethylarsonous Acid contains an organic framework; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 123.97 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.

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.

As a certified reference material (CRM), Monomethylarsonous Acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaCH5AsO2
Molecular Weight123.97 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)-0.5
CAS Registry Year (est.)1964

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