Sodium hydroxide reagent

Only theophylline yields an intensely fluorescent derivative under long-wavelength UV light when treated with chloramine T — sodium hydroxide reagent. The purine derivatives caffeine and theobromine investigated at the same time fluoresce very weakly or not at all. 

Fast Black Salt K-Sodium Hydroxide Reagent... 

The reaction course has not been elucidated (cf. also sodium hydroxide reagent). Hydrolyzation reactions and aromatizations are probably primarily responsible for the formation of colored and fluorescent derivatives. Substituted nitrophenols - e.g. the thiophosphate insecticides — can probably be hydrolyzed to yellow-colored nitro-phenolate anions by sodium hydroxide or possibly react to yield yellow Meisenheimer complexes. Naphthol derivatives with a tendency to form radicals, e.g. 2-naphthyl benzoate, react with hydrolysis to yield violet-colored mesomerically stabilized 1,2-naph-thalenediol radicals. 

Sitosterol 206, 213, 242, 243 Sodium hydroxide reagent 395,408 Sodium methylate reagent 70 Solamargine 62 Solasodine 62 Solasonine 62 SoUdaginis, Extr. 279 Solvents 119ff... 

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