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n-Heneicosanoic acid (C21)
2,4-bis(Ethylamino)-6-diethylamino-s-triazine 标准品
磺菌胺
LA Steel, Carbon (AISI 1078)
Mafenide Related Compound A
EPA杀虫剂混标 标准品
Telmisartan Related Compound B
15-乙酰基脱氧雪腐镰刀菌烯醇溶液, 100ppm
Allethrin (0.1mg/ml in Methylene chloride)
氯氟吡氧乙酸溶液,1000ppm