1 MPR 2-mercapto-propion aldehyde 1.000 2 9DC (2s)-2,3-disulfanylpropan-1-ol 0.833 3 9EX (2s)-2-methyl-3-sulfanyl-propan-1-ol 0.833 4 MPT Beta-mercaptopropionic acid 0.833 5 SGM Monothioglycerol 0.833 6 5VQ 2-propen-1-ol 0.800 7 CBG Propanal 0.800 8 POL N-propanol 0.800 9 XL3 Propane-1-thiol 0.800 10 3SS 3-disulfanylpropanoic acid 0.714 11 A8C 3-(methylsulfanyl)propanoic acid 0.714 12 B27 (2r,3s) 3-amino-4-mercapto-2-butanol 0.714 13 BB9 (2z)-2-amino-3-sulfanylprop-2-enoic acid 0.714 14 CY3 2-amino-3-mercapto-propionamide 0.714 15 CYS Cysteine 0.714 16 DCY D-cysteine 0.714 17 GYF Methyl 3-sulfanylpropanoate 0.714 18 SGL 1-hydroxy-1-thio-glycerol 0.714