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,MW:551.49
3.3'.5.5'-Tetrachloro-4.4'-biphenyldiol (无证书)
27种农药混标
Crotethamide
6-Amino-6-deoxy α-Galactosyl-C18-ceramide
氯草定
Calcium - 5% HCl(有证书)
治螟磷溶液, 100ppm
异丙净/杀草津 标准品
Powdered Echinacea Pallida Extract
Dipropetryn Solution 100ug/ml in Acetonitrile