Synonyms: PCDE 99;1,2,4-Trichloro-5-(2,4-dichlorophenoxy)benzene;2,2',4,4',5-pentaCDE;2,2',4,4',5-PENTACHLORODIPHENYL ETHER;Polychlorinated diphenyl ethers congener 99;Ether, 2,4-dichlorophenyl 2,4,5-trichlorophenyl;60123-64-0;Benzene, 1,2,4-trichloro-5-(2,4-dichlorophenoxy)-;AC1L29EO;LS-32237;C11044