33515-09-2 5-Oxo-L-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosylglycyl-L-leucyl-L-arginyl-L-prolylglycinamide hydrochloride 51952-41-1 Factrel Gonadorelin hydrochloride Gonadorelin hydrochloride [USAN] LH-RH hydrochloride Luteinizing hormone-releasing factor hydrochloride