英文同义词
Cyclopentadiene, 1,2,3,4,5-pentamethyl-;1,2,3,4,5-PENTAMETHYLCYCLOPENTADIENE;1,2,3,4,5-pentamethyl-1,3-cyclopentadiene;1,2,3,4,5-Pentamethylcyclopentadiene, tech;1,2,3,5,5-pentamethylcyclopenta-1,3-diene;PENTAMETHYLCYCLOPENTADIENE;1,2,3,4,5-PENTAMETHYLCYCLOPENTADIENE, 95 %;PENTAMETHYLCYCLOPENTADIENE 98+%