1 CHT Choline ion 1.000 2 BTL Betaine aldehyde 1.000 3 A1H9I Fluoromethylcholine 0.875 4 BET Trimethyl glycine 0.875 5 DMG N,N-dimethylglycine 0.750 6 ETM 2-(trimethylammonium)ethyl thiol 0.750 7 TMA Tetramethylammonium ion 0.714 8 6EM (2s)-1-amino-N,N,N-trimethyl-1-oxobutan-2-aminium 0.700