1	CYW	S-[(2r)-2-hydroxypropanoyl]-L-cysteine	1.000
2	6KM	S-propanoyl-L-cysteine	0.917
3	CSA	S-acetonylcysteine	0.917
4	CGV	S-[(R)-carboxy(hydroxy)methyl]-L-cysteine	0.846
5	CY4	S-butyryl-cystein	0.846
6	P9S	Dihydroxypropylcysteine	0.846
7	I3L	Allyl-cysteine	0.833
8	OCY	Hydroxyethylcysteine	0.833
9	SCY	S-acetyl-cysteine	0.833
10	SWW	(2~{S})-2-azanyl-3-(2-hydroxyethylsulfanyl)propanoic acid	0.833
11	MCS	Malonyl cysteine	0.786
12	CCS	Carboxymethylated cysteine	0.769
13	YCM	S-(2-amino-2-oxoethyl)-L-cysteine	0.769
14	ECX	S-ethyl-L-cysteine	0.750
15	M0H	S-(hydroxymethyl)-L-cysteine	0.750
16	C3Y	S-[(1s)-1-hydroxy-1-(hydroxyamino)ethyl]-L-cysteine	0.714