Synonyms: 2-Butenoicacid, 2-methyl-, 1-(2,3-dihydro-7-oxo-7H-furo[3,2-g][1]benzopyran-2-yl)-1-methylethylester, [S-(E)]-; Crotonic acid, 2-methyl-, ester with2,3-dihydro-2-(1-hydroxy-1-methylethyl)-7H-furo[3,2-g][1]benzopyran-7-one, (E)-(8CI); Deltoin (7CI); 7H-Furo[3,2-g][1]benzopyran, 2-butenoic acid deriv.;(-)-Deltoin; (-)-Sprengelianin; Marmesin tiglate