A compound represented by formula (I) is provided, wherein in formula (I), R 1and R 2each independently represents hydrogen, O-R 3or S-R 4, at least one of R 1and R 2is O-R 3or S-R 4, and R 3and R 4are independently a C 1to C 10alkyl group, such that the C 1to C 10alkyl group is non-substituted or substituted with at least one selected from the group consisting of -OH, -NH 2, halogen, ester, ether, and carboxylic acid, and M being a metal or a metal-containing compound. The compound represented by formula (I) is shown to have higher specificity to tumor cells, and is therefore suitable for carrying anti-cancer drugs and/or nuclear imaging agents. A pharmaceutical composition for tumor imaging and tumor therapy is also provided. formula (I)一種由式（I）表示的化合物，其中在式（I）中，R 1和R 2各自獨立地表示氫、O-R 3或S-R 4，R 1和R 2中的至少一者為O-R 3或S-R 4，且R 3和R 4獨立地為C 1至C 10烷基，所述C 1至C 10烷基為未經取代或經選自由-OH、-NH 2、鹵素、酯、醚和羧酸所組成的群組中的至少一者取代，以及M為金屬或含金屬化合物。由式（I）表示的化合物顯示出對腫瘤細胞具有更高的特異性，且因此適於攜帶抗癌藥物和／或核子造影劑。本發明另提出一種用於腫瘤造影和腫瘤治療的醫藥組成物。 式（I）
