11H-[1]Benzothiopyrano[4,3-b]indol-5-ium, perchlorate 4146-40-1 (PERCHLORIC SALT) AIDS-156104 AIDS156104 NSC150750 (PERCHLORIC SALT) Perchloric acid compound with 11H-5lambda~4~-thiochromeno[4,3-b]indole (1:1) {11H-[1]Benzothiopyrano[4,3-b]indol-5-ium,} perchlorate