| abstract |
A compound represented by formula (I) is provided, wherein in formula (I), R 1 and R 2 each independently represents hydrogen, O—R 3 or S—R 4 , at least one of R 1 and R 2 is O—R 3 or S—R 4 , and R 3 and R 4 are independently a C 1 to C 10 alkyl group, such that the C 1 to C 10 alkyl 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. |