122933-59-9 38101-59-6 Glu-trp Glutamyl tryptophan IM 862 IM862 L-Tryptophan, N-L-alpha-glutamyl- L-alpha-Glutamyl-L-tryptophan NSC 334073 Oglufanide Oglufanide [INN] Thymogen Timogen alpha-Glutamyltryptophan