1	CCS	Carboxymethylated cysteine	1.000
2	CCJ	Carboxymthylated D- cysteine	1.000
3	CGV	S-[(R)-carboxy(hydroxy)methyl]-L-cysteine	0.917
4	OCY	Hydroxyethylcysteine	0.909
5	SWW	(2~{S})-2-azanyl-3-(2-hydroxyethylsulfanyl)propanoic acid	0.909
6	48V	{[(2r)-2,3-diamino-3-oxopropyl]sulfanyl}acetic acid	0.833
7	AEA	(2-amino-2-carbamoyl-ethylsulfanyl)-acetic acid	0.833
8	CSA	S-acetonylcysteine	0.833
9	XYM	(2z)-3-[(carboxymethyl)sulfanyl]-2-hydroxyprop-2-enoic acid	0.833
10	XYN	3-[(carboxymethyl)sulfanyl]-2-oxopropanoic acid	0.833
11	YCM	S-(2-amino-2-oxoethyl)-L-cysteine	0.833
12	ECX	S-ethyl-L-cysteine	0.818
13	A1A7V	S-lactoyl-L-cysteine	0.769
14	CYW	S-[(2r)-2-hydroxypropanoyl]-L-cysteine	0.769
15	P9S	Dihydroxypropylcysteine	0.769
16	I3L	Allyl-cysteine	0.750
17	SCY	S-acetyl-cysteine	0.750
18	SLZ	L-thialysine	0.750
19	CML	(2s)-2-{[(2r)-2-amino-2-carboxyethyl]sulfanyl}butanedioic acid	0.733
20	K5H	(2~{R})-2-azanyl-3-[3,3,3-tris(fluoranyl)-2,2-bis(oxidanyl)propyl]sulfanyl-propanoic acid	0.733
21	060	S-methyl-D-cysteine	0.727
22	ESD	(2-amino-ethylsulfanyl)-acetic acid	0.727
23	SMC	S-methylcysteine	0.727
24	X79	(prop-2-ynylthio)acetic acid	0.727
25	X7K	2-(cyanomethylthio)acetic acid	0.727
26	X7Q	(allylthio)acetic acid	0.727