Synonyms: Isovalericacid, 4a,5,6,7a-tetrahydro-4-(hydroxymethyl)spiro[cyclopenta[c]pyran-7(1H),2'-oxirane]-1,6-diylester acetate (8CI); Spiro[cyclopenta[c]pyran-7(1H),2'-oxirane], butanoic acidderiv.; Spiro[cyclopenta[c]pyran-7(1H),2'-oxirane]-1,6-diol,4a,5,6,7a-tetrahydro-4-(hydroxymethyl)-, 4-acetate diisovalerate (8CI)