(D-Phe(sup 2)-D-trp(sup 3)-D-phe(sup 6))-LHRH (D-Phe(sup 2)-D-trp(sup 3)-D-phe(sup 6))-luteinizing hormone-releasing hormone (D-Phe-2,D-trp-3,D-phe-6)-LHRH (D-Phe-2,D-trp-3,D-phe-6)-luteinizing hormone-releasing hormone Luteinizing hormone-releasing hormone, (D-phe(sup 2)-D-trp(sup 3)-D-phe(sup 6))- Luteinizing hormone-releasing hormone, (D-phe-2,D-trp-3,D-phe-6)- OK6684000