73684-80-7 L-Leucinamide, 5-oxo-L-prolyl-L-seryl- Pyr-ser-leu-NH2 Pyro-gln-ser-leu-amide Pyroglutamine-serine-leucinamide Pyroglutaminyl-seryl-leucinamide Pyroglutamylserylleucinamide Thyrotropin releasing hormone-AN Trh-AN