Infrared analysis of pharmaceuticals. 1. Application of the potassium bromide disk technique to some steroids, alkaloids, barbiturates, and other drugs.

Abstract

The quantitative potassium bromide disk technique has been investigated and methods have been adopted for its application to some pharmaceuticals. Average deviations from linearity within ±4.0 per cent were obtained with some crystalline compounds. Analyses of pharmaceutical preparations, by hand-grinding or vibrator-grinding methods, resulted in average agreement within ±3 to ±4.5 per cent with ultraviolet spectrophotometric or gravimetric determinations.