81557-54-2 GNRH, N-Ac-ala(1)-(4-Cl-phe)(2)-trp(3,6)- LHRH, N-Acetylphenylalanyl(1)-(4-chlorophenylalanyl)(2)-tryptophan(3,6)- LHRH, N-ac-ala(1)-(4-Cl-phe)(2)-trp(3,6)- Luteinizing hormone-releasing factor, 1-(N-acetyl-L-alanine)-2-(4-chloro-D-phenylalanine)-3-D-tryptophan-6-D-tryptophan- N-Ac-1-Ala-2-(4-Cl-phe)-3,6-trp-LHRH Naapcpt-LHRH