Wuya College of Innovation Shenyang Pharmaceutical University Shenyang 110016 China;
School of Pharmacy Guangxi University of Chinese Medicine Nangning 530200 China;
School of Pharmacy Shenyang Pharmaceutical University No.103 Wenhua Road Shenyang 110016 China;
School of Life Science and Biopharmaceutics Shenyang Pharmaceutical University Shenyang 110016 China;
5-Fluorouracil; Prodrugs; Monocarboxylate transporter 1; Permeability; Oral bioavailability;