(L-His(sup 2)-L-gly(sup 6))-LHRH (L-His(sup 2)-L-gly(sup 6))-luteinizing hormone-releasing hormone Luteinizing hormone-releasing hormone, (L-his(sup 2)-L-gly(sup 6))- Luteinizing hormone-releasing hormone, 2-L-histidine-6-L-glycine- OK6509000 WY 16,558