11H-[1]BENZOTHIOPYRANO[4,3-B]INDOL-5-IUM, 2-METHYL-, PERCHLORATE; 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
CAS No. 4295-21-0