Yanaka, R.; Bindu Gandham, H.; Swamy Rumalla, C.; Kaliyaperumal, M.; John Saida, S.; Reddy Jammula, A. Isolation, Identification and Characterization of Gefitinib Novel Degradation Products by NMR and HRMS, Method Development and Validation by UPLC. ajc 2021, 33, 1743-1748.