Pauly's test: Pauly's test is a specific test used for the qualitative detection of tyrosine or histidine (imidazole ring). It is named after German chemist Hermann Pauly, who first described the reaction. Pauly's Test Principle: Diazotised sulphanilic acid reacts with imidazole ring in an alkaline medium to form a red coloured complex. Pauly's test Reagent: … [Read more...]