1,2-Cyclopentanedione, 3,5-dimethyl- 13494-07-0 3,5-Dimethyl-1,2-cyclopentadione 3,5-Dimethyl-1,2-cyclopentanedione 3,5-Dimethylcyclopentane-1,2-dione EINECS 236-811-3 FEMA No. 3269