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afatinib impurities138 Afatinib impurity 11/Des-(4-dimethylamino-2-en-1-oxo)butylamino 6-(5-Hydroxy-pyrrolidin-2-on-1-yl) Afatinib 1-[4-[(3-Chloro-4-fluorophenyl)amino]-7-[[(3S)-tetrahydro-3-furanyl]oxy]-6-quinazolinyl]-5-hydroxy-2-pyrrolidinone 2-Pyrrolidinone, 1-[4-[(3-chloro-4-fluorophenyl)amino]-7-[[(3S)-tetrahydro-3-furanyl]oxy]-6-quinazolinyl]-5-hydroxy- 1-(4-((3-chloro-4-fluorophenyl)amino)-7-(((S)-tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)-5-hydroxypyrrolidin-2-one? (Afatinib Impurity） Afatinib Impurity 23Q: What is Afatinib Impurity 23 Q: What is the CAS Number of Afatinib Impurity 23 Q: What is the storage condition of Afatinib Impurity 23