Electric Literature of 1081-17-0, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1081-17-0, Name is 1-(4-Methoxyphenyl)-1H-pyrrole-2,5-dione, molecular formula is C11H9NO3. In a Patent£¬once mentioned of 1081-17-0
From traditional Chinese medicine in summer without preparing protopine and pharmaceutical formulations thereof (by machine translation)
The invention relates to a traditional Chinese medicine in summer from without preparing protopine and pharmaceutical formulations thereof, comprises the following steps: (1) in order to carry out or not carried out the volume of the acid to adjust a concentration of 75 – 85% ethanol solution to the summer after crushing no medicine to carry out the extraction of the mellow concentrated solution; (2) using the alkaloid of the principle of the acid soluble alkali, the summer without total alkaloid with alcohol-free concentrate in the summer of other component separation; (3) to chloroform or shui Bao and chloroform ethanol mixed solution or methylene chloride, and the volume concentration is 85 – 95% ethanol solution of a certain volume ratio is matched in accordance with the separation of the total alkaloid crystallization, purification, to get the protopine. The method of access to the purity of 98% or more of the pure product of the soft bed at the same time, greatly improves yield, the cost is reduced, the operation is simple, can be suitable for the actual industrial production protopine of. (by machine translation)
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Reference£º
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem