1	CGV	S-[(R)-carboxy(hydroxy)methyl]-L-cysteine	1.000
2	CCJ	Carboxymthylated D- cysteine	0.917
3	CCS	Carboxymethylated cysteine	0.917
4	A1A7V	S-lactoyl-L-cysteine	0.846
5	CYW	S-[(2r)-2-hydroxypropanoyl]-L-cysteine	0.846
6	OCY	Hydroxyethylcysteine	0.833
7	SCY	S-acetyl-cysteine	0.833
8	SWW	(2~{S})-2-azanyl-3-(2-hydroxyethylsulfanyl)propanoic acid	0.833
9	48V	{[(2r)-2,3-diamino-3-oxopropyl]sulfanyl}acetic acid	0.769
10	6KM	S-propanoyl-L-cysteine	0.769
11	AEA	(2-amino-2-carbamoyl-ethylsulfanyl)-acetic acid	0.769
12	CSA	S-acetonylcysteine	0.769
13	XYM	(2z)-3-[(carboxymethyl)sulfanyl]-2-hydroxyprop-2-enoic acid	0.769
14	XYN	3-[(carboxymethyl)sulfanyl]-2-oxopropanoic acid	0.769
15	YCM	S-(2-amino-2-oxoethyl)-L-cysteine	0.769
16	ECX	S-ethyl-L-cysteine	0.750
17	M0H	S-(hydroxymethyl)-L-cysteine	0.750
18	C3Y	S-[(1s)-1-hydroxy-1-(hydroxyamino)ethyl]-L-cysteine	0.714
19	CY4	S-butyryl-cystein	0.714
20	P9S	Dihydroxypropylcysteine	0.714