5,5-Dimethyl-1,1,1-trifluorohexane-2,4-dione 98%5,5-Dimethyl-1,1,1-trifluorohexane-2,4-dione1,1,1-Trifluoro-5,5-dimethyl-2,4-hexanedione5,5-二甲-1,1,1-三氟-2,4-己二酮1,1,1-Trifluoro-5,5-dimethyl-2,4-hexanedionePivaloyltrifluoroacetone1,1,1-三氟-5,5-二甲基-2,4-己二酮PTA