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丹皮酚 对照品
叔丁基对羟基苯甲醚溶液,1000ppm
Base/Neutrals Calibration Mixture 2000ug/ml in Methylene chloride
2-巯基依托咪酯
Heptachlor (13C1) Solution 100ug/ml in n-Nonane
Iron Oxide (Fe2O3) 99.999%
5-Amino-2-pyrimidinecarbonitrile
2,3′,4′,5-Tetrachlorobiphenyl-3,4,6-d3 标准品
Cyclopropyl-2,2,3,3-d4 Methyl Ketone 标准品
左旋多巴 对照品