Synonyms: 2-Butenoicacid, 2-methyl-, 1-(8,9-dihydro-2-oxo-2H-furo[2,3-h]-1-benzopyran-8-yl)-1-methylethylester, [S-(Z)]-;Columbianadin (7CI);Crotonic acid, 2-methyl-, ester with8,9-dihydro-8-(1-hydroxy-1-methylethyl)-2H-furo[2,3-h]-1-benzopyran-2-one,(Z)-(S)- (8CI);2H-Furo[2,3-h]-1-benzopyran-2-one, 8,9-dihydro-8-(1-hydroxy-1-methylethyl)-,2-methylcrotonate, (Z)-(S)- (8CI);Columbianedin;Columbianetin angelate;Columbianetin angelic ester;Zosimin;