(D-Leu(sup 6)(N(sup alpha)-Me)leu(sup 7))-LHRH (D-Leu(sup 6)(N(sup alpha)-Me)leu(sup 7))-luteinizing hormone-releasing hormone Luteinizing hormone-releasing hormone, (D-leu(sup 6)(N(sup alpha)-ME)leu(sup 7))- OK6560000