A note on the synthesis of N-methyl-labeled quaternary amines and betaines.
D000588:Amines / Q000138:chemical synthesis*; D000613:Aminobutyrates / Q000138:chemical synthesis; D001622:Betaine / Q000138:chemical synthesis*; D002247:Carbon Isotopes; D002855:Chromatography, Thin Layer; D014316:Tritium
D000588:Amines; D000613:Aminobutyrates; D002247:Carbon Isotopes; D014316:Tritium; D001622:Betaine