Synonyms: beta-Alanine, N-[[2-[[(4-cyanophenyl)amino]methyl]-1-methyl-1H-benzimidazol-5-yl]carbonyl]-N-2-pyridinyl-, ethyl ester;6H-pyridazino[1,2-a][1,2]diazepine-1-carboxylic acid, 9-[[(1S)-1-(ethoxycarbonyl)-3-phenylpropyl]amino]octahydro-10-oxo-, (1S,9S)-, hydrate (1:1);(1S,9S)-9-{[(2S)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl]amino}-10-oxooctahydro-6H-pyridazino[1,2-a][1,2]diazepine-1-carboxylic acid hydrate (1:1);[1S-[1a,9a(R*)]]-9-[[1-(Ethoxycarbonyl)-3-phenylpropyl]amino]octahydro-10-oxo-6H-pyridazino[1,2-a][1,2]diazepine-1-carboxylic Acid Monohydrate;