104450-05-7 3'-(Butoxymethyl)-4'-(3-(tert-butylamino)-2-hydroxypropoxy)acetophenone fumarate (2:1) Acetophenone, 3'-(butoxymethyl)-4'-(3-(tert-butylamino)-2-hydroxypropoxy)-, fumarate (2:1) Ethanone, 1-(3-(butoxymethyl)-4-(3-(t-butylamino)-2-hydroxypropoxy)phenyl)-, fumarate (2:1)