Patent ID: 11857638
Assignee: PROMEGA CORPORATION
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C  G | IPC A  C  G

Claim 2:
3. The conjugate of claim 1, or a salt thereof, wherein G is formula (II) or (IV);
L1 is L1a or L1a-L1b, wherein L1b is bonded to X1;
L1a is —C1-12alkylene-, -(C2-6alkylene-O)x—C1-6alkylene-, or C3-8cycloalkylene;
L1b comprises one or more covalently bonded divalent members, the one or more divalent members being selected from the group consisting of —C1-6alkylene-, —C2-6alkylene-O-, C3-8cycloalkylene, —C(O)—, —O—, —S—, —S(O)—, —S(O)2—, —NR20—, —C(R21)═N—NH—, —CH(CO2H)—,, , an amino acid moiety, and phenylene;
wherein the C3-8cycloalkylene and phenylene of L1a and/or L1b is optionally independently substituted with 1-4 substituents independently selected from the group consisting of C1-4alkyl, C1-4haloalkyl, C1-4alkoxy, halo, cyano, and hydroxy;
R20 and R21 at each occurrence are independently hydrogen or C1-4alkyl; and
x is an integer from 1 to 20.