On the Non-identity of Adenine and Vitamin B₄

Abstract

Pure Adenine, prepared from dry yeast does not serve as a source of Vitamin B₄ in the albino-rat. Since it has been shown repeatedly that the feeding of large amounts of adenine neither prevents nor cures the typical symptoms of Vitamin B₄ deficiency.
My thanks are due to Proffesor U. Suzuki for his advice and interest throughout the work to Dr. S. Ohdake for the supply of oryzanin, Vitamin B₁ concentrates and to Mr. H. Ariyama for his continued help in this experiment.