Also Called: 2 , 3 , 7 , 8-TCDF; 2 , 3 , 7 , 8-tetrachlorodibenzofuran; 2,3,7,8-Tetrachlorodibenzofuran; 2,3,7,8-tetrachlorodibenzofuran (TCDF);2,3,7,8 Tetrachlorodibenzofuran;2,3,7,8-Tetrachlorodibenzo-p-furan (TCDF), DibenzofuransÂ;2,3,7,8-Tetrachloro dibenzofurans;2,3,7,8-TeCDF;2,3,7,8-TCDF (AND CONGENERS);2,3,7,8-TETRACHLORODIBENZOFORAN;2,3,7,8-Tetrachlorodibenzo-p-furan (TCDF), Dibenzofurans