1 3EG (2s)-2-amino-4,4,4-trifluorobutanoic acid 1.000 2 OBF (2s)-2-amino-4,4-difluorobutanoic acid 0.900 3 7OZ (S)-2-amino-4-fluorobutanoic acid 0.800 4 WIY 4,4,4-trifluorobutan-1-ol 0.800 5 A3B D-vinylglycine 0.700 6 ABA Alpha-aminobutyric acid 0.700 7 DBB D-alpha-aminobutyric acid 0.700 8 DBU (2z)-2-aminobut-2-enoic acid 0.700 9 LPG (2s)-2-aminobut-3-ynoic acid 0.700 10 LVG L-vinylglycine 0.700