11H-[1]Benzothiopyrano[4,3-b]indol-5-ium, 2-methyl-, perchlorate 4295-21-0 (PERCHLORIC SALT) AIDS-156107 AIDS156107 NSC150782 (PERCHLORIC SALT) Perchloric acid compound with 2-methyl-11H-5lambda~4~-thiochromeno[4,3-b]indole (1:1) {11H-[1]Benzothiopyrano[4,3-b]indol-5-ium,} 2-methyl-, perchlorate