Seventeen analogues of the tumor-promoting agent anthralin were tested for the same biological property by repeated skin application on mouse skin using female ICR/Ha Swiss mice, after a single application of a subcarcinogenic dose of 7, 12-dimethylbenz [a] anthracene. Seven of the compounds tested are new compounds. They are 1, 8-diacetoxy-9- anthrone, 1, 8-dimyristoyloxy-9-anthrone, 1, 8-dihydroxy-lO-acety1-9-anthrone, 1, 8- ...