terephthalic acid 1-tert-butyl ester 4-methyl ester

ethyl 4-carbonochloridoylbenzoate

对二甲苯-D6

1,1',1'',1'''-(2,5-环己二烯-1,4-二亚基二亚甲二基)四苯

对苯二甲酰胺