11H-[1]Benzothiopyrano[4,3-b]indol-5-ium, 9-methoxy-, perchlorate AIDS-156108 AIDS156108 NSC150784 (PERCHLORIC SALT) Perchloric acid compound with 9-methoxy-11H-5lambda~4~-thiochromeno[4,3-b]indole (1:1) {11H-[1]Benzothiopyrano[4,3-b]indol-5-ium,} 9-methoxy-, perchlorate