A process for purifying meloxicam form I from a crude meloxicam, which comprises:
i. contacting the crude meloxicam with an amine in a non-aqueous solvent to form a meloxicam salt;
ii. isolating the meloxicam salt;
iii. dissolving the meloxicam salt in an aqueous solvent to form a salt solution; and
iv. adding an acid to the salt solution to precipitate free meloxicam.
一种从粗糙的
美洛昔康中提纯
美洛昔康I型的方法,包括:i. 将粗糙的
美洛昔康与胺在非
水溶剂中接触以形成
美洛昔康盐;ii. 分离
美洛昔康盐;iii. 将
美洛昔康盐溶解在
水溶剂中形成盐溶液;和iv. 向盐溶液中加入酸以沉淀游离
美洛昔康。