[(R)-1-Hydroxymethyl-2-((R)-methylsulfanylmethanesulfinyl)-ethyl]-carbamic acid tert-butyl ester

S-<(methylthio)methyl>-L-cysteinol

(S)-2-tert-Butoxycarbonylamino-3-((S)-methylsulfanylmethanesulfinyl)-propionic acid methyl ester

(S)-2-tert-Butoxycarbonylamino-3-((S)-methanesulfinylmethylsulfanyl)-propionic acid methyl ester

[(R)-1-Hydroxymethyl-2-((R)-methanesulfinylmethylsulfanyl)-ethyl]-carbamic acid tert-butyl ester