606-47-3 Hydroquinone bis(6,7-dimethoxy-2-methyltetrahydroisoquinolyl-(1)-methyl) ether dimethiodide ISOQUINOLINIUM, 1,1'-(p-PHENYLENEBIS(OXYMETHYLENE))BIS(1,2,3,4-TETRAHYDRO-6,7-DI Isoquinolinium, 1,1'-(p-phenylenebis(oxymethylene))bis(1,2,3,4-tetrahydro-6,7-dimethoxy-2,2-dimethyl-, diiodide