Lindstedt, G A note on the synthesis of N-methyl-labeled quaternary amines and betaines. [electronic resource] - Journal of chromatography Jan 1969 - 78-9 p. digital Publication Type: Journal Article Standard No.: 10.1016/s0021-9673(01)97979-8 doi Subjects--Topical Terms: Amines--chemical synthesisAminobutyrates--chemical synthesisBetaine--chemical synthesisCarbon IsotopesChromatography, Thin LayerTritium