1,2-Cyclohexanedicarboxylic anhydride, methyl- 1,3-Isobenzofurandione, hexahydromethyl- 25550-51-0 39363-62-7 86403-41-0 95032-44-3 EINECS 247-094-1 Hexahydromethylphthalic anhydride Methylhexahydrophthalic anhydride