PART I of Freudenberg's “Stereochemie” has already been reviewed somewhat fully in these columns (NATURE, April 22, 1933, p. 563), and a briefer notice must suffice to record the completion of Parts ...
ALTHOUGH nearly fifty years have passed since Hofmann succeeded in preparing methylethylamylphenylammonium chloride—a compound in which the nitrogen atom is directly united with five different groups ...
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