3a-methyl-5,6-dihydro-4H-2-benzofuran-1,3-dione, Methyltetrahydrophthalic Anhydride, Methylcyclohexene-1,2-dica, MTHPA, METHYLTETRAHYDROPHTHALIC ANHYDRIDE, Tetrahydromethylphthalic anhydride, Methyl tetrahydrophthalic anhydrid (MTHPA ,CAS NO:11070-44-3)