The 2nd failed 'isolation' attempt (1937) where the chemical formula was given (by Karrer) even before the isolation experiment. Since Vitamin A was unknown, how could one be sure 60 rats were "depleted of Vitamin A"? #ReificationFallacy
@weldonwilliford @RameseSanders @SavoySir Chemistry industry fabricated the synthetic "Vitamin" market and certified it by the #dynamitetrash prize, because they could.