Minoxidil Impurity 44 CAS 1637646-87-7

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1637646-87-7
Molecular FormulaC5H11NO2
Molecular Weight117.15 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Minoxidil Impurity 44 CAS 1637646-87-7 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 117.15 g/mol gives Minoxidil Impurity 44 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Minoxidil Impurity 44 (CAS 1637646-87-7) is a certified pharmaceutical impurity reference standard with the molecular formula C5H11NO2 and a molecular weight of 117.15 g/mol.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Minoxidil Impurity 44 is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 117.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

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 FormulaC5H11NO2
Molecular Weight117.15 g/mol
Purity>95%
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)1.0
CAS Registry Year (est.)1993
Nitrogen Atoms1

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