Etizolam (also known as Depas, Etizolamum, Sedekopan, Y-7131, AHR 3219, 4-(2-chlorophenyl)-2-ethyl-9-methyl-6H-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepine, 4-(o-Chlorophenyl)-2-ethyl-9-methyl-6H-thieno(3,2-f)-s-triazolo(4,3-a)(1,4)diazepine, 6-(o-Chlorophenyl)-8-ethyl-1-methyl-4H-s-triazolo(3,4-c)thieno(2,3-e)(1,4)-diazepine, 6H-Thieno(3,2-f)(1,2,4)triazolo(4,3-a)(1,4)diazepine, 4-(2-chlorophenyl)-2-ethyl-9-methyl- or 8-Ethyl-6-(o-chlorophenyl)-1-methyl-4H-s-triazolo(3,4c)thieno(2,3e)-1,4-diazepine) is a substance of the thienodiazepine class.