Patent ID: 11931431
Assignee: FUTURECHEM CO., LTD
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 6:
7. The compound, the stereoisomer thereof, the hydrate thereof, or the pharmaceutically acceptable salt thereof according to claim 5, wherein:
L1 is —(CH2)a—, wherein a is an integer of 2 to 4;
U is a bond, or —C(O)—;
R1 is -L5-CO2H, wherein L5 is —(CH2)b—, wherein b is an integer of 1 to 2;
X is a bond, or —C(O)—;
W is a bond or —NA1-, and A1 is hydrogen or pyridyl;
L2 is a bond or —(CH2)d—, wherein d is an integer of 1 to 2;
Tz is a bond,, L3 is C1-8 straight alkylene, wherein one or more carbon atoms in alkylene can be replaced by oxygen atoms;
L4 is —(CH2)3—;
n is an integer of 0 to 1;
R2 is hydrogen, methyl, or halogen;
Y is oxygen;
Z′ is a chelator, and the chelator is,