1	SCY	S-acetyl-cysteine	1.000
2	6KM	S-propanoyl-L-cysteine	0.909
3	ECX	S-ethyl-L-cysteine	0.900
4	M0H	S-(hydroxymethyl)-L-cysteine	0.900
5	A1A7V	S-lactoyl-L-cysteine	0.833
6	C3Y	S-[(1s)-1-hydroxy-1-(hydroxyamino)ethyl]-L-cysteine	0.833
7	CGV	S-[(R)-carboxy(hydroxy)methyl]-L-cysteine	0.833
8	CY4	S-butyryl-cystein	0.833
9	CYW	S-[(2r)-2-hydroxypropanoyl]-L-cysteine	0.833
10	I3L	Allyl-cysteine	0.818
11	OCY	Hydroxyethylcysteine	0.818
12	QCS	S-carbamoyl-L-cysteine	0.818
13	SLZ	L-thialysine	0.818
14	SWW	(2~{S})-2-azanyl-3-(2-hydroxyethylsulfanyl)propanoic acid	0.818
15	060	S-methyl-D-cysteine	0.800
16	SMC	S-methylcysteine	0.800
17	MCS	Malonyl cysteine	0.769
18	CCJ	Carboxymthylated D- cysteine	0.750
19	CCS	Carboxymethylated cysteine	0.750
20	CSA	S-acetonylcysteine	0.750
21	OO0	Alliin	0.750
22	YCM	S-(2-amino-2-oxoethyl)-L-cysteine	0.750
23	XCN	S-cyano-L-cysteine	0.727
24	A8C	3-(methylsulfanyl)propanoic acid	0.700
25	BB9	(2z)-2-amino-3-sulfanylprop-2-enoic acid	0.700
26	CYS	Cysteine	0.700
27	DCY	D-cysteine	0.700