TY - BOOK AU - Ahmed Fathi Farghali Hagag AU - Gehad Genidy Mohamed , AU - Moamen Salah Eldean Refat , TI - Spectrophotometric determination of some pharmaceutical drugs / PY - 2009/// CY - Cairo : PB - Ahmed Fathi Farghali Hagag , KW - Albendazole KW - Allopurinol KW - Sildenafil citrate N1 - Thesis (M.Sc.) - Cairo University - Faculty of Science - Department of Analytical chemistry; Issued also as CD N2 - This work has been carried out to investigate the : Spectrophotometric microdetermination of albendazole (ALB) allopurinol (APN) and sildenafil citrate (SILC) via charge - transfer formation . This includes the utility of someāœ¹- acceptors such as 2,3 - dichloro - 5,6 - dicyano - p - benzoquinone (DDQ) and 3,6 - dichloro - 2,5 - dihydroxy - p - benzoquinone ER -