Described herein are compounds of Formula (I): or a salt thereof; wherein: R1 and R5 are independently selected from H, OH and alkoxy; R2-R4 and R6-R8 are independently selected from H, OH, F, Cl, Br, and I; R9 and R10 are independently selected from H, alkyl, alkenyl, alkynyl, and aryl; with the proviso that: at least one of R1 and R5 is OH or alkoxy; and at least one of R2-R4 and R6-R8 is F, Cl, Br or I; compositions comprising said compounds; and methods of making and using the same.本文敘述式(I)之化合物:或其鹽類;其中R1及R5各自選自H、OH以及烷氧基;R2-R4以及R6-R8各自選自H、OH、F、Cl、Br以及I;R9及R10各自選自H、烷基、烯基、炔基以及芳基;其限制條件為:R1及R5中至少一個是OH或烷氧基;且R2-R4及R6-R8中至少一個是F、Cl、Br或I;包含該化合物之組成物;以及其製備和使用之方法。