(S)-2-(Chloroacetyl)-1-((4-methylphenyl)sulfonyl)-3-pyrrolidine 3-Pyrrolidine, 2-(chloroacetyl)-1-((4-methylphenyl)sulfonyl)-, (S)- 63762-06-1 BRN 1486462 N-Tosyl-L-proline chloromethyl ketone