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Prophos Solution in Toluene
28种农残混标
Trinexapac-ethyl Solution 100ug/ml in Acetonitrile
HYDROXYBACCATIN I, 1-(RG) 标准品
隐形孔雀石绿
2-Amino-7-(chloromethyl)pteridin-4(1H)-one Hydrochloride
雌酮
二嗪农农药纯度标准物质
Ethyl-2-amino-4.5.6.7-tetrahydrobenzo[b]thiophene-3-carboxylate (无证书)
2,3-Butandione