Inventor

YANG SHU SHU

US3 patents

Patents

3 patents

US5610162AMar 11, 1997

Ester derivatives of 4-aza-steroids

MERCK & CO INC67 citations95

US5536727AJul 16, 1996

17-Ethers and thioethers of 4-aza-steroids

MERCK & CO INC60 citations95

US4069321AJan 17, 1978

Blocked cholecalciferol and dihydrotachysterol 3 derivatives

MERCK & CO INC28 citations80