2023
DOI: 10.1002/bmc.5805
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A novel liquid chromatography with quadrupole time‐of‐flight‐tandem mass spectroscopy method for ultra‐trace level identification and quantification of the genotoxic impurity 2,6‐diamino‐5‐nitropyrimidin‐4(3H)‐one in valganciclovir hydrochloride

Shaik Mahammad Ali,
Manchuri Krishna Moorthy,
Nayakanti Devanna

Abstract: In the present study, the main objective is to develop an analytical method for ultra‐trace level measurement of 2,6‐diamino‐5‐nitropyrimidin‐4(3H)‐one (DMNP) in valganciclovir hydrochloride (VAL) using liquid chromatography‐quadrupole time‐of‐flight‐tandem mass spectroscopy (LC–QTOF–MS/MS). In the early stages of guanine synthesis, DMNP is formed, and guanine is known to be the key starting material for the synthesis of VAL. Taking into consideration DMNP potential genotoxicity, this analytical method has bee… Show more

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