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6-Ethylchrysene 标准品
trans-1-Methyl-2-propyl环己烷
Fuel Oil #6 Solution 50,000ug/ml in Methylene chloride
砜嘧磺隆
磺胺嘧啶兽药纯度标准物质
List 1 - Pesticide Standard 标准品
甲醇中胺丙畏(烯虫磷)溶液
1-Iodobutane (无证书)
治螟磷溶液,1000ppm
1,1,1-Trichloro-2,2-bis(4-chlorophenyl-d4)ethane