CAS No 383415-90-5 , L-Tryptophan,L-tryptophyl-L-tyrosyl-L-lysyl-L-histidyl-L-valyl-L-alanyl-L-seryl-L-prolyl-L-arginyl-L-tyrosyl-L-histidyl-L-threonyl-L-valylglycyl-L-arginyl-L-alanyl-L-serylglycyl-L-leucyl-L-leucyl-L-methionylglycyl-L-leucyl-L-arginyl-L-arginyl-L-seryl-L-prolyl-L-tyrosyl-L-leucyl-