CAS 438228-34-3 appears in our catalog under these names: 4-Ethyl-5-(4-ethyl-5-methylthien-3-yl)-4h-1,2,4-triazole-3-thiol, 95%, 4-Ethyl-5-(4-ethyl-5-methylthiophen-3-yl)-4H-1,2,4-triazole-3-thiol, 97%. Offered by: Combi-blocks, AmBeed. Available pack sizes: 1g, 5g, 250mg.