142438-62-8 4,5-Dimethyl-3,4-epoxy-5-hydroxy-3-(methoxycarbonyl)-gamma-butyrolactam 4,5-Dimethyl-3,4-epoxy-5-hydroxy-3-(methylcarbonyl)-gamma-butyrolactam 6-Oxa-3-azabicyclo(3.1.0)hexane-1-carboxylic acid, 4,5-dimethyl-4-hydroxy-2-oxo-, methyl ester CCRIS 4983