sigma试剂 γ-Chlordane solution,γ-氯丹 溶液,48193 - analytical standard, 100 μg/mL in hexane, ampule of 1 mL
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sigma试剂Pesticide Surrogate Spike Mix,农药替代加标混标,48460 - analytical standard, 200 μg/mL each component in acetone, ampule of 1 mL
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sigma试剂 Glyceraldehyde-3-phosphate Dehydrogenase from baker's yeast ,G5537 - lyophilized powder, 70-140 units/mg protein
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sigma试剂 Dimethyl sulfoxide ,二甲基亚砜,D8418 - BioReagent, for molecular biology, suitable for plant cell culture, ≥99.9%
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