The metabolism of the carcinogenic hydrocarbon, 1, 2, 5, 6-dibenzanthracene, has been investigated by numerous workers.'Until last year, however, only two metabolic products had been isolated, one from the rabbit2 and one from the rat or rnou~ e.~ Both compounds were shown to be dihydroxydibenzanthracenes and Cason and Fieser4 showed that the product from the latter animals was 4', 8'-dihydroxydibenzanthra-cene. Recently, Heidelberger, ...
![Naphtho[1,2-c]furan-1,3-dione,6-hydroxy- Structure](https://image.chemsrc.com/caspic/194/53300-36-0.png)
