Patent ID: 11970495
Assignee: KIND PHARMACEUTICAL
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 6:
7. The compound of Formula I, or an isotopically labeled compound thereof, or an optical isomer thereof, a geometric isomer thereof, a tautomer thereof or a mixture of various isomers, or a pharmaceutically acceptable salt thereof, or a prodrug thereof according to claim 1, wherein R8 is selected from the group consisting of hydrogen, C1-C6 acyclic alkyl, and —OC(O)-C1-C12 acyclic alkyl; wherein the C1-C6 acyclic alkyl and —OC(O)—C1-C12 acyclic alkyl are optionally substituted by 1 to 3 substituents, wherein the substituents are independently selected from hydroxy, halo, cyano, amino, carboxy, C1-C6 acyclic alkyl and C1-C6 acyclic alkyl-O—.