Synonyms: ETHYLTETRAMETHYLCYCLOPENTADIENE;ETHYLTETRAMETHYLCYCLOPENTADIENE, 97%, MI XTURE OF ISOMERS;Ethyltetramethylcyclopentadiene,mixture of isom. Tech.;ETHYLTETRAMETHYLCYCLOPENTADIENE, 90%, TECH., MIXTURE OF ISOMERS;Ethyltetramethylcyclopentadiene, tech., mixture of isomers