(R)-(6-ethoxyquinolin-4-yl)-[(4S,5R,7S)-5-ethyl-1-azabicyclo[2.2.2]octan-7-yl]methanol hydrochloride (R)-(6-ethoxy-4-quinolyl)-[(2S,4S,5R)-5-ethylquinuclidin-2-yl]methanol hydrochloride (R)-(6-ethoxy-4-quinolyl)-[(2S,4S,5R)-5-ethyl-2-quinuclidinyl]methanol hydrochloride E9876_SIGMA Optochin