furan
maleic acid
(+/-)-6t-Brom-5c-hydroxy-7-oxa-(1rH.4cH)-bicyclo<2.2.1>heptan-2c.3c-dicarbonsaeure-3-lacton
(+/-)-5exo-bromo-6endo-hydroxy-7-oxa-norbornane-2endo,3exo-dicarboxylic acid-2-lactone-3-methyl ester
(+/-)-5exo-bromo-6endo-hydroxy-7-oxa-norbornane-2endo,3endo-dicarboxylic acid-2-lactone-3-methyl ester
(+/-)-6t-Brom-5c-hydroxy-7-oxa-(1rH.4cH)-bicyclo<2.2.1>heptan-2t.3c-dicarbonsaeure-3-lacton