The invention relates to process for the preparation of benzofuran derivative and intermediates thereof. More particularly, it relates to processes for the preparation of dronedarone or pharmaceutically acceptable acid addition salts thereof in crystalline form. The invention also relates to pharmaceutical compositions that include the dronedarone hydrochloride in crystalline form substantially free from disulfonamide impurity.
该发明涉及一种制备
苯并呋喃衍
生物及其中间体的方法。更具体地说,它涉及制备晶体形式的
氟地拉酮或其药用可接受的酸盐。该发明还涉及包含晶体形式的
氟地拉酮盐酸盐的制药组合物,该组合物基本上不含二
磺胺基杂质。