1,2,3,4,7-PNCDD

1,2,3,4,7-pentachlorodibenzodioxin

1,2,3,4,7-pentachloro-dibenzo-p-dioxi

Dibenzo-p-dioxin, 1,2,3,4,7-pentachloro-

1,2,3,4,7-pentachlorodibenzo-para-dioxin