(D-Phe(sup 2)-val(sup 3)-D-trp(sup 6))-LHRH 2-D-Phenylalanine-3-L-valine-6-D-tryptophanluteinizing hormone-releasing factor(pig) 64891-34-5 Luteinizing hormone-releasing factor(pig), 2-D-phenylalanine-3-L-valine-6-D-tryptophan-