149204-50-2 L-Ornithine, N5-(4,5-dihydro-4-methyl-5-oxo-1H-imidazol-2-yl)- N(delta)-(5-Methyl-4-oxo-2-imidazolin-2-yl)ornithine N5-(4,5-Dihydro-4-methyl-5-oxo-1H-imidazol-2-yl)-L-ornithine TU 185 TU-185