Synonyms: Oxiranecarboxylicacid, 2-methyl-,(2'R,3aR,4S,6aR,8S,9aS,9bS)-decahydro-8-hydroxy-3,6-bis(methylene)-2-oxospiro[azuleno[4,5-b]furan-9(2H),2'-oxiran]-4-ylester, (2S)- (9CI); Oxiranecarboxylic acid, 2-methyl-,decahydro-8-hydroxy-3,6-bis(methylene)-2-oxospiro[azuleno[4,5-b]furan-9(2H),2'-oxiran]-4-ylester, [3aR-[3aa,4a(S*),6aa,8b,9a,9aa,9bb]]-; Repin (8CI);Spiro[azuleno[4,5-b]furan-9(2H),2'-oxirane], oxiranecarboxylic acid deriv.