Abstract
Pralatrexate (PTXT) is an antineoplastic folate analog and the chemical name is (2S)-2-[[4-[(1RS)-1-[(2,4-diaminopteridin-6-yl)methyl]but-3-ynyl] benzoyl] amino] pentanedioic acid. Degradation products of PTXT drug product (DP) under different forced degradation conditions have been studied using LC-PDA and LC–MS techniques. PTXT DP was subjected to forced degradation under the conditions of hydrolysis, photolysis, oxidation, and heat in accordance with ICH guidelines. The LC–MS compatible HPLC method was developed and stressed solutions were chromatographed on reversed phase HPLC. The degradation products were monitored at a wavelength of 242nm. Stress study revealed that PTXT was sensitive towards acid, alkali, peroxide, light and heat. The degradation impurities (I–IX) were identified and characterized using LC-PDA and mass spectral data.
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