Synonyms: 1,5-Dimethyl cyclooctadiene;1,5-dimethyl-5-cyclooctadiene;5-Cyclooctadiene,1,5-dimethyl-1;1,5-DIMETHYL-1,5-CYCLOOCTADIENE;1,5-Dimethyl-1,5-cyclooctadiene (contains 1,6-dimethyl isomer);1,5-dimethylcycloocta-1,5-diene;contains1,6-Dimethylisomere;1,5-DIMETHYL-1,5-CYCLOOCTADIENE (CONTAINS 1,6-DIMETHYL ISOMER) 98+%