1,6-Cyclo(1-Ac-glu-2-phe-3-trp-6-lys)-LHRH 86123-13-9 Cgptl-LHRH GNRH, 1,6-cyclo(Ac-glu(1)-phe(2)-trp(3)-lys(6))- LHRH, 1,6-Cyclo(N-acetylglutamyl(1)-phenylalanyl(2)-tryptophyl(3)-lysine(6))- LHRH, 1,6-cyclo(Ac-glu(1)-phe(2)-trp(3)-lys(6))- Luteinizing hormone-releasing-factor, 1-(N-acetyl-L-glutamic acid)-2-D-phenylalanine-3-D-tryptophan-6-D-lysine-, cyclic (1-6)-peptide