813425-83-1Relevant articles and documents
Synthesis method of palonosetron hydrochloride related substance A
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Paragraph 0027-0046, (2020/06/16)
The invention relates to the technical field of chemical synthesis of medicines, in particular to a synthesis method of a palonosetron hydrochloride related substance A. The synthesis method comprisesthe following steps: taking palonosetron hydrochloride as a raw material, firstly dissolving the palonosetron hydrochloride in a solvent, then adding an oxidant, carrying out a stirring reaction at acertain temperature for a certain period of time to obtain a crude product, and then carrying out purification to obtain the palonosetron hydrochloride related substance A. The synthesis method can be used for preparing palonosetron hydrochloride nitrogen oxide impurities, and has the advantages of mild reaction conditions, simple post-treatment steps, safe and stable operation, low cost, high product yield (70%) and high product purity (98% or above). The high-purity palonosetron hydrochloride nitrogen oxide impurity prepared by the invention can be used as an impurity standard substance fordetecting a finished palonosetron hydrochloride medicine product, and is beneficial to quantification and qualitative treatment of the impurity in the finished medicine product, so that the quality control of the palonosetron hydrochloride medicine is improved.