Minoxidil Impurity 9 CAS 74638-76-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.74638-76-9
Molecular FormulaC4H6N4O
Molecular Weight126.12 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Minoxidil Impurity 9 CAS 74638-76-9 chemical structure

Description

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

Minoxidil Impurity 9 (CAS 74638-76-9) is a certified pharmaceutical impurity reference standard with the molecular formula C4H6N4O and a molecular weight of 126.12 g/mol.

Structurally, Minoxidil Impurity 9 (C4H6N4O) contains an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 126.12 g/mol, it falls into the low-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

As a certified reference material (CRM), Minoxidil Impurity 9 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 FormulaC4H6N4O
Molecular Weight126.12 g/mol
Purity>95%
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)4.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1978
Nitrogen Atoms4

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