Synonyms: DASM;Dehydroandrographolide succinic acid ester;134418-29-4;AC1O52MX;4-[[(1R,2R,4aS,5R,8aS)-2-hydroxy-1,4a-dimethyl-6-methylidene-5-[(2E)-2-(2-oxofuran-3-ylidene)ethyl]-3,4,5,7,8,8a-hexahydro-2H-naphthalen-1-yl]methoxy]-4-oxobutanoic acid; 4-[[(1R,2R,4aS,5R,8aS)-1-(hydroxymethyl)-1,4a-dimethyl-6-methylidene-5-[(2E)-2-(2-oxofuran-3-ylidene)ethyl]-3,4,5,7,8,8a-hexahydro-2H-naphthalen-2-yl]oxy]-4-oxobutanoic acid;Butanedioic acid, monoester with (1R-(1alpha,2alpha,4aalpha,5beta(E),8abeta))-3-(2-(decahydro-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylene-1-naphthalenyl)ethylidene)-2(3H)-furanone;Butanedioic acid, monoester with [1R-[1.alpha.,2.alpha.,4a.alpha.,5.beta.(E),8a.beta.]]-3-[2-[decahydro-6-hydroxy-5-(hydroxymethyl)-5,8a-dimethyl-2-methylene-1-naphthalenyl]ethylidene]-2(3H)-furanone