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(2007/10/02)(2S,3R)-Oxirane-2,3-dicarboxylic acid monomethyl ester
N-<(tert-butoxycarbonyl)methyl>-p-anisidine
(2R,3S)-dimethyl oxirane-2,3-dicarboxylate
methyl (2RS,3SR)-2,3-oxiranedicarboxylate
(5R,6S)-6-((S)-Hydroxy-methoxycarbonyl-methyl)-7-oxo-3-(pyridin-4-ylsulfanyl)-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
(2R,5R,6S)-6-((S)-Hydroxy-methoxycarbonyl-methyl)-3,7-dioxo-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid 4-nitro-benzyl ester
(R)-[(2S,3S)-2-Acetoxy-1-(4-methoxy-phenyl)-4-oxo-azetidin-3-yl]-(tert-butyl-dimethyl-silanyloxy)-acetic acid methyl ester
(S)-[(2R,3R)-2-Acetoxy-1-(4-methoxy-phenyl)-4-oxo-azetidin-3-yl]-hydroxy-acetic acid methyl ester
(2S,3S)-3-((S)-Hydroxy-methoxycarbonyl-methyl)-1-(4-methoxy-phenyl)-4-oxo-azetidine-2-carboxylic acid