title: [On the colour reaction of hydroxyproline with 4-dimethylaminobenzaldehyde (author's transl)].
abstract: With the as yet unexplained chloramine-T-oxydation of hydroxyproline the formation of pyrrole-2-carboxylic acid and pyrrole could be established. On the oxydation with peroxyde as well as with chloramine-T pyrrole is the starting base for the colour reaction with Ehrlichs reagent. From a comparison of thin layer chromatographic und UV-VIS data of the dyes formed by the oxidation of hydroxyproline and the pyrrole colour reaction the formation of a dipyrrylphenylmethene salt and ms-tetra-(4-dimethylaminophenyl)-porphin is made probable.
mesh_terms: D000814:Aniline Compounds; D001547:Benzaldehydes; D055598:Chemical Phenomena; D002621:Chemistry; D002700:Chloramines; D003116:Color; D006909:Hydroxyproline; D007202:Indicators and Reagents; D010084:Oxidation-Reduction; D011758:Pyrroles; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000814:Aniline Compounds; D001547:Benzaldehydes; D002700:Chloramines; D007202:Indicators and Reagents; D011758:Pyrroles; D006909:Hydroxyproline
vernacular_title: Zur Farbreaktion von Hydroxyprolin mit 4-Dimethylaminobenzaldehyd.