(1S,2RS,5R)-2-hydroxy-3-oxabicyclo[3.3.0]octane

(+)-(1S,5R)-3-oxabicyclo<3.3.0>oct-7-en-2-one

dimethyl cis-1,2-cyclopentanedicarboxylate

1,2-Cyclopentanedimethanol, monoacetate, (1R-cis)-

N-(4-methoxyphenyl)-cis-cyclopentane-1,2-dicarboximide