Synonyms: Butanoicacid, 3-methyl-,(1S,2'R,6S,7aS)-4-[(acetyloxy)methyl]-6,7a-dihydrospiro[cyclopenta[c]pyran-7(1H),2'-oxirane]-1,6-diylester (9CI); Butanoic acid, 3-methyl-,4-[(acetyloxy)methyl]-6,7a-dihydrospiro[cyclopenta[c]pyran-7(1H),2'-oxirane]-1,6-diylester, [1S-(1a,6a,7b,7aa)]-; Spiro[cyclopenta[c]pyran-7(1H),2'-oxirane], butanoic acid deriv.;Baldrisedon; Halazuchrome B; Valepotriate; Valtrate; Valtratum