Cabozantinib Impurity 1은 다중키나아제 억제제 cabozantinib과 관련된 공정 유래 불순물로, 분자식 C56H49F2N6O10 및 분자량 1004.02 g/mol을 갖는다. 구조적으로는 다수의 헤테로원자와 카보닐기를 포함한 고도로 치환된 지용성 방향족 골격을 가지며, 단순 분해산물보다는 후기 합성 단계의 부산물 또는 산화적 커플링 유도체에 더 가깝다. 예상 농도가 매우 낮고 구조가 복잡하므로, 특성화에는 일반적으로 LC-MS/MS, 고해상도 질량분석, 그리고 LC-UV 또는 NMR에 의한 직교적 확인이 요구된다. 규제적 불순물 프로파일링에서는 구조 배정, 생성 경로, 잠재적 독성학적 관련성을 중심으로 평가된다.
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