CAS 208167-83-3 appears in our catalog under these names: tert-Butyl 4-(2-chloroethyl)tetrahydropyrazine-1-carboxylate, 97%, tert-Butyl 4-(2-chloroethyl)piperazine-1-carboxylate, 97%, 1-Boc-4-(2-chloroethyl)piperazine, 97% , 4-(2-Chloroethyl)piperazine-1-carboxylic acid tert-butyl ester, tert-Butyl 4-(2-chloroethyl)piperazine-1-carboxylate 98%. Offered by: Combi-blocks, AmBeed, Thermo Scientific (Alfa Aesar), Biosynth, Thermo Scientific (Acros). Available pack sizes: 1g, 10g, 25g, 5g, 100g, 50g, 250mg, 250 mg.