Abstract:
Disclosed is a new method for manufacturing paliperidone with high purity and high yield. According to the present invention palperidone with high purity of 99.85-99.9% and high yield of 85-90% can be manufactured and refined, and moreover, paliperidone having content of specific impurities controlled to be lower than 0.1%. Disclosed is a method for manufacturing paliperidone is characterized by comprising the steps of manufacturing crude paliperidone; manufacturing paliperidone hydrochloride; and conversing into paliperidone.