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• Clarithromycin EP Impurity A [FC166203][CAS no. 124412-58-4]_Biosynth - 코아사이언스 Clarithromycin EP Impurity A is a white to off-white powder that is soluble in methanol, acetone, and chloroform high-performance liquid chromatography (HPLC) and confirmed by nuclear magnetic resonance spectroscopy blog.naver.com · 2026.08.11