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  • CAS 35570-68-4
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6-chloroxazolpyridone is a key intermediate of the anticancer drug crizotinib. Crizotinib is a targeted therapy drug for non-small cell lung cancer developed by Pfizer in the United States. It is a cutting-edge and epoch-making drug in the field of targeted therapy for lung cancer. It was approved to market in the United States in August 2011 and was written into the international lung cancer treatment guidelines at the end of the year as a first-line drug for ALK-positive patients.