Validation of the Analytical Method for Determining Lapatinib Ditosylate Raw Material Contents using HPLC-DAD. ERUDITIO - Indonesian J. of Food and Drugs Saf. [Internet]. 2024 May 2 [cited 2026 Jun. 30];4(1):33-42. Available from: https://eruditio.pom.go.id/index.php/home/article/view/178