(R)-2-amino-1-ethyl-7-(3-hydroxy-4-methoxy-3-methylbut-1-ynyl)-N-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamide;1,8-Naphthyridine-3-carboxamide, 2-amino-1-ethyl-1,4-dihydro-7-[(3R)-3-hydroxy-4-methoxy-3-methyl-1-butyn-1-yl]-N-methyl-4-oxo-;CS-994;SAR 131675 USP/EP/BP;(R)-2-Amino-1-ethyl-7-(3-hydroxy-4-methoxy-3-methylbut-1-yn-1-yl)-N-methyl-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxamide;SAR131675, 10 mM in DMSO