1 ZZJ N^2^-methyl-L-alaninamide 1.000 2 33X N-methyl-D-alanine 0.750 3 DAM N-methyl-alpha-beta-dehydroalanine 0.750 4 MAA N-methyl-L-alanine 0.750 5 1HC Prop-2-enamide 0.714 6 ROP Propionamide 0.714 7 6EM (2s)-1-amino-N,N,N-trimethyl-1-oxobutan-2-aminium 0.700