On November 18, 2019, when Hong Yan checked the production schedule of donepezil hydrochloride, he found that the 9027-191002 batch of donepezil hydrochloride intermediates finished production on October 31, 2019 (detection completed on November 1, 2019). According to the production schedule, by November 26, 2019, the intermediate dh-5 will be stored in the intermediate storage room for 27 days after the completion of production. It does not meet the requirements of h3-mpd-10195 technical specification for donepezil hydrochloride (version 05) on the storage of donepezil dh-5 intermediate at room temperature for 20 days.<br>Due to the need of dynamic verification of donepezil hydrochloride, the workshop has updated the production plan for many times, and the planners did not notice that the storage time of dh-5 has been adjusted from 30 days to 20 days during the preparation of the production plan, resulting in deviation of the production plan. According to the latest production plan, the storage time of dh-5 will exceed the specified period. The deviation was due to personnel and was the first in two years.<br>According to the stability evaluation report of donepezil hydrochloride intermediate (h3-ev-9027-008r), if the intermediate dh-5 stays for 20 days, the product quality will not be affected. According to the historical data and trend analysis, dh-5 is basically stable within 30 days of storage, and there is no quality risk in this stay for 27 days, and there are still many steps such as hydrogenation, extraction, salification, crystallization, etc. which can effectively remove impurities, so it is estimated that the deviation will not affect the quality of the finished product and the validation effectiveness. In order to increase risk identification, it is planned to sample and test the dh-5 staying before production, and only after the sample is qualified can it be put into production.<br>1. Before production, sampling and testing shall be carried out again for the dh-5 staying, and the production can be continued only after it is qualified; if it is unqualified, the batch of dh-5 shall be destroyed.<br>2. Organize the retraining of production scheduling and production related personnel on h3-mpd-10195 donepezil hydrochloride process specification version 05, and define the storage period of intermediate dh-5 of donepezil hydrochloride.<br>
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