Determination of ethyl cyanoacetate in tofacitinib citrate crude by liquid-liquid extraction-gas chromatography
SHI Li-juan, JIANG Yu-juan, CHENG Guan-jun, WANG Li, LI Hui, LIU Yi-xuan, WANG Hai-na
Chinese Journal of Pharmaceutical Analysis . 2026, (1): 137 -142 .  DOI: 10.16155/j.0254-1793.2025-0134

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