伊马替尼杂质对照品A N-Boc-N-Desmethyl Imatinib 伊马替尼杂质对照品B N-Desmethyl Imatinib 伊马替尼杂质对照品C Imatinib Meta-methyl-piperazine 伊马替尼杂质对照品D Imatinib Para-diaminomethylbenzene 伊马替尼杂质对照品E Imatinib (Piperidine)-N-oxide 伊马替尼杂质对照品F Imatinib (Pyridine)-N-oxide