1 MCR Sulfanylacetic acid 1.000 2 MTG [methylthio]acetate 0.833 3 ACT Acetate ion 0.800 4 ACY Acetic acid 0.800 5 BME Beta-mercaptoethanol 0.800 6 313 (dimethyl-lambda~4~-sulfanyl)acetic acid 0.714 7 YBX (ethylsulfanyl)acetic acid 0.714