[Determination of nystatin component composition using HPLC and TLC with densitometry].

The component composition of nystatin produced by an improved strain of Streptomyces noursei was determined by HPLC on Milichrom chromatograph (USSR). It was shown that the antibiotic consisted of nystatins A1, A2, A3 and B and admixture substances. The data appeared to be in good agreement with the results of the complex TLC investigation, by using densitometry.

[Isolation and study of the compounds of a peptide nature contained in an oleandomycin preparation].

Marketed oleandomycin phosphate, as well as the International Standard of oleandomycin (Great Britain, the 1st Int. Std., 1964) were studied with a purpose of determining their composition.