Patent ID: 8106154

Claim:
A linker moiety compound, wherein the linker moiety compound has the structure: wherein each λ is an integer having a value independently selected from 1≦λ≦4; each μ is an integer having a value independently selected from 2≦μ≦4; each A is independently selected from the group consisting of CO 2 H, activated CO 2 H, NH 2 , NCO, CHO, maleimide, and vinyl sulfone; each B is independently selected from the group consisting of CH and N; each G is independently selected from the group consisting of (CH 2 ) ν , CO and COCH 2 OCH 2 CO; each E is independently selected from the group consisting of NH 2 , NHBoc, CO 2 H, CHO, and maleimide; each X is independently selected from the group consisting of CO, bond, and CONH; each Y is independently selected from the group consisting of CO, bond, and NHCO; and each ν is an integer having a value independently selected from 2≦ν≦4.