CAS No 107658-43-5 , L-Alanine,L-tryptophyl-L-a-glutamyl-L-alanyl-L-alanyl-L-leucyl-L-alanyl-L-a-glutamyl-L-alanyl-L-leucyl-L-alanyl-L-a-glutamyl-L-alanyl-L-leucyl-L-alanyl-L-a-glutamyl-L-histidyl-L-leucyl-L-alanyl-L-a-glutamyl-L-alanyl-L-leucyl-L-alanyl-L-a-glutamyl-L-alanyl-L-leucyl-L-a-glutamyl-L-alanyl-L-leucyl-L-alanyl-