xanthogalenol + S-adenosyl-L-methionine = 4'-O-methylxanthohumol + S-adenosyl-L-homocysteine + H(+)
xanthogalenol + s-adenosyl-l-methionine = 4'-o-methylxanthohumol + s-adenosyl-l-homocysteine + h(+)
xanthogalenol + S-adenosyl-L-methionine = 4'-O-methylxanthohumol + S-adenosyl-L-homocysteine + H(+)
xanthogalenol + s-adenosyl-l-methionine = 4'-o-methylxanthohumol + s-adenosyl-l-homocysteine + h(+)