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Methyl cis-11,14-eicosadienoate C20:2 标准品
(24R)-24-Methylcholest-4-ene and (24R)-24-Ethylcholest-4-ene
乳粉中三聚氰胺质控样
2,4-Dichlorobiphenyl 标准品
农药辛硫磷溶液标准物质
Sulisobenzone
三氯乙酸 1g 标准品
Beclomethasone Dipropionate,
Custom-Mix of 5 Furan Derivatives 1000 ?g/mL in Toluene
Metaldehyde Solution 100ug/ml in Acetonitrile