1	XYN	3-[(carboxymethyl)sulfanyl]-2-oxopropanoic acid	1.000
2	XYM	(2z)-3-[(carboxymethyl)sulfanyl]-2-hydroxyprop-2-enoic acid	1.000
3	CCS	Carboxymethylated cysteine	0.833
4	CGV	S-[(R)-carboxy(hydroxy)methyl]-L-cysteine	0.769
5	OCY	Hydroxyethylcysteine	0.750
6	SWW	(2~{S})-2-azanyl-3-(2-hydroxyethylsulfanyl)propanoic acid	0.750
7	DEI	(2z)-2-hydroxy-3-(methylsulfanyl)prop-2-enoic acid	0.727