title: DC polarographic assay of piperazines.
abstract: Piperazine, piperazine salts, and piperazine-containing compounds, e.g., diethylcarbamazine and piperazine theophylline, are determined by direct current polarography of the corresponding nitroso-derivative. The nitroso-derivative exhibits a well defined cathodic wave at -0.8 V vs SCE. The plot of peak height vs concentration is rectilinear between 1.6 X 10(-5) and 19.2 X 10(-5) M. Recoveries from bulk drugs were 97.7-101.12% with a standard deviation of 2.14-3.44. The procedure was successfully applied to analysis of drug content in representative dosage forms with good accuracy.
mesh_terms: D002021:Buffers; D004049:Diethylcarbamazine / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D010879:Piperazines / Q000032:analysis*; D011048:Polarography; D011208:Powders; D012996:Solutions; D013607:Tablets; D013806:Theophylline / Q000032:analysis
chemical_list: D002021:Buffers; D010879:Piperazines; D011208:Powders; D012996:Solutions; D013607:Tablets; D013806:Theophylline; D004049:Diethylcarbamazine