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Certificate of Analysis   General properties: CAS:37472-52-9 Cat.#：QY-C-1025 Date of Analysis： 2019.11.05 Recommended Retest date： 2020.11.05 Stability： 12 months Storage： 4-8°C in the dark       Items Specification Results Appearance liquid liquid 1H NMR Identical to the   Structure Identical to the   Structure Foreign Material None None Substitution ＞95% ＞95% Report Date: 2020.11.05       This product is for research use only, Not for human or animal use 核磁报告：