1	2MM	N,N-dimethyl-L-methionine	1.000
2	4MM	N,N,N-trimethylmethionine	0.917
3	MME	N-methyl methionine	0.909
4	FME	N-formylmethionine	0.833
5	AME	N-acetylmethionine	0.769
6	CDT	4-methylsulfanyl-2-ureido-butyric acid	0.769
7	CXM	N-carboxymethionine	0.769
8	W9J	N-carbamoyl-L-methionine	0.769
9	2QZ	N,N-dimethyl-L-threonine	0.750
10	O7G	N,N-dimethyl-L-valine	0.750
11	LAL	N,N-dimethyl-L-alanine	0.727
12	MDH	N-methyldehydrobutyrine	0.727