Studies on Analysis of Pharmaceuticals. (II) : Gas Chromatography of Phenacetin and Acetanilide in Pharmaceutical Preparation.

The gas chromatography was applied to the separation of phenacetin and acetanilide which are coexisting in the same pharmaceutical preparation. The calibration curves of phenacetin and acetanilide were obtained by adopting 2-naphthyl methyl ether as the internal standard substance. The recovery of phenacetin was 94∼100% and that of acetanilide 93∼102%.