title: [Polarography of 4-hydroxybenzoic acid ester (Nipagin). I. Polarographic determination of 4-hydroxybenzoic acid ester concerning its nitro-derivatives].
mesh_terms: D002855:Chromatography, Thin Layer; D004952:Esters / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D007259:Infrared Rays; D008722:Methods; D010226:Parabens / Q000032:analysis* / Q000138:chemical synthesis; D011048:Polarography; D013053:Spectrophotometry; D014466:Ultraviolet Rays
chemical_list: D004952:Esters; D010226:Parabens
vernacular_title: Polarographie der 4-Hydroxybenzoesäureester (Nipagine). I. Polarographische Bestimmung der 4-Hydroxybenzoesäureester über ihre Nitro-Derivate.