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2,2’,4,4’-四羟基二苯甲酮溶液, 100ppm
Tebupirimfos Solution in Acetonitrile
Nicotine-d4 标准品
L-2-Pyrrolidinone-3,3,4,4,5-d5-5-carboxylic Acid 标准品
4,6-Di-tert-butyl-2-methylphenol
HUMAN HAIR (trace elements) 标准品
6:2 MonoPAPS
3.5-Diiodosalicylate lithium salt (无证书)
4.4'-DDE (13C12) Solution 100ug/ml in n-Nonane
甲醇中菲溶液标准物质