Reaction of o-Aminoazo Compounds and Barbituric Acids : Riboflavin 1487 likely that this compound accounts for some of the biological activity in green plants. Our own limited experience with green plant sources indicates the presence therein of at least two microbiological growth factors both of which are active as antianemia agents in the chick.

Vol. 65 2. N-Methylbenzylamine, an open chain type of secondary amine, has been found to react with bromine derivatives of benzalacetone and ben-zalacetophenone in a manner similar to that of heterocyclic secondary amines. Lincoln, Nebraska

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