(R)-2-((4-((7-chloroquinolin-4-yl)amino)pentyl)(ethyl)amino)ethanol; Hydroxychloroquine R-isomer Impurity; Ethanol, 2-[[4-[(7-chloro-4-quinolinyl)amino]pentyl]ethylamino]-, (R)-; 2-[[(4R)-4-[(7-Chloro-4-quinolinyl)amino]pentyl]ethylamino]ethanol; 2-[[(4R)-4-[(7-chloro-4-quinolinyl)amino]pentyl]ethylamino]-ethanol
