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Isolation and 2D-NMR analysis of methylation impurity formed in the condensation/reduction reaction in the synthesis of berberine
ZHANG Xiangming, ZHAO Zongmin, ZHANG Xiaojin, GU Zhiguo
Shanghai Medical & Pharmaceutical Journal ›› 2024, Vol. 45 ›› Issue (9) : 118-121.
Isolation and 2D-NMR analysis of methylation impurity formed in the condensation/reduction reaction in the synthesis of berberine
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