A method for separating leucin from amino-valerianic acid

Abstract

Separation of leucin from amino-valerianic acid was accomplished by means of lead acetate and ammonia. A basic lead salt of leucin, insoluble in hot water, was formed. From a mixture containing 52.53 per cent, of C and 9.39 per cent, of H, by the use of these reagents, a substance was obtained, which had 54.55 per cent, of C and 9.90 per cent, of H. On reprecipitation it acquired the composition: C = 54.70 per cent.; H = 10.09 Per cent. Leucin contains 54.89 per cent, of C and 10.01 per cent. Of H.