Also Called: 1 , 2 , 3 , 7 , 8-PeCDF; 1 , 2 , 3 , 7 , 8-pentachlorodibenzofuran; 1,2,3,7,8-Pentachlorodibenzofuran; 1,2,3,7,8-pentachlorodibenzofuran (PnDF);1,2,3,7,8 Pentachlorodibenzofuran;1,2,3,7,8- pentachlorodibenzofuran;1,2,3,7,8-Pentachlorodibenzo-p-furan (1,2,3,7,8_PeCDF);1,2,3,7,8-Pentachloro dibenzofuran;1,2,3,7,8-PENTACHLORODIBENZOFORAN;1,2,3,7,8-PeCDF