A study of the chemical nature of vitamin B6 and methods for its preparation in a concentrated state

Abstract

THE term vitamin B6 has been given by Gy6rgy [1934] to that part of the vitamin B2 complex which is responsible for the cure of the specific dermatitis developed by young rats fed on a vitamin B-free diet supplemented with purified vitamin B1 and lactoflavin. The object of this paper is to give an account of the study which has been made of this dietary factor. PART I. EXTRACTION OF VITAMIN B6. 0