1-Prolyl-2-phenylalanyl-3,6-tryptophan-LHRH 69770-59-8 GNRH, pro(1)-phe(2)-trp(3,6)- Gppt-LHRH LHRH, pro(1)-phe(2)-trp(3,6)- LHRH, prolyl(1)-phenylalanyl(2)-tryptophan(3,6)- Luteinizing hormone-releasing factor, 1a-endo-L-proline-2-D-phenylalanine-3-D-tryptophan-6-D-tryptophan-