a A Biuret Salt of the Tetrapeptide Triglycylgfycine.

a A Biuret Salt of the Tetrapeptide Triglycylgfycine..pdf

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as shown by hydmlysis with 85% acetic acid.12 This hydrolysis gave two fractions, one acidic and one neutral. The acidic fraction formed a semicarbaaone, m. p. 161-. 162', corresponding to the semicarbazone of a-methyl-6- keto-iso-octanic acid.13 The neutral fraction proved to be the ethyl ester of this wid. It is obvious ...
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