11H-[1]Benzothiopyrano[4,3-b]indol-5-ium, 8-methoxy-, perchlorate 19802-61-0 (PERCHLORIC SALT) AIDS-156106 AIDS156106 NSC150781 (PERCHLORIC SALT) Perchloric acid compound with 8-methoxy-11H-5lambda~4~-thiochromeno[4,3-b]indole (1:1) {11H-[1]Benzothiopyrano[4,3-b]indol-5-ium,} 8-methoxy-, perchlorate