(-)-Protolichesteric acid

(+)-Protolichesterinic acid

(2S)-2β-Tridecyl-4-methylene-5-oxotetrahydrofuran-3α-carboxylic acid

(2S,3R)-Tetrahydro-4-methylene-5-oxo-2-tridecyl-3-furancarboxylic acid

[2S,3R,(-)]-Tetrahydro-4-methylene-5-oxo-2-tridecyl-3-furancarboxylic acid