School of Pharmacy;
Shenyang Pharmaceutical University;
Shenyang 110016;
China;
School of Life Science and Bio-pharmaceutics;
Shenyang Pharmaceutical University;
Shenyang 110016;
China;
School of Medical Devices;
Shenyang Pharmaceutical University;
Shenyang 110016;
China;
Ion-pair HPLC; Tumor cells; Nucleotides; Targeted metabolomics analysis; PCA;