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First Standard® 嗪吡嘧磺隆
3,4,5-Trichlorophenyl-4-nitrophenyl ether 标准品
Ditalimfos Solution 100ug/ml in Toluene
1,2-Benzene-d4-diamine 标准品
2,3,4-三氯酚
20727, 1-Methylbenz[a]anthracene (purity ) 标准品
A0405024 硫代艾地那非 CAS号110488-70-5
JMHW Volatile Organic Compounds Mixture #2 2000ug/ml in Methanol
1.2-Benzanthracene solution in methanol 100ug/ml in Methanol
磺胺甲恶唑兽药标准物质