(1-beta)-6,6',7',12'-Tetramethoxy-2,2,2',2'-tetramethyltubocuraranium dichloride 76786-17-9 Dimethyl l-curine dimethochloride Tubocuraranium, 6,6',7',12'-tetramethoxy-2,2,2',2'-tetramethyl-, dichloride, (1-beta)-