The Antineuritic Vitamin I. the Method of Assay, Concentration of the Vitamin with Silver under Various Conditions, and Its Solubility in Certain Organic Solvents*
نویسندگان
چکیده
In an attempt to repeat the study of Jansen and Donath (1927) on the isolation of antineuritic vitamin B we have made several observations of interest. Satisfactory description of this work necessarily involves the question as to the adequacy of the biological test employed in assaying the many fractions obtained. Inasmuch as there is no unanimity concerning the proper method to use when testing for antineuritic vitamin potency, it is necessary first of all to describe the particular technique which we have used in these investigations.
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