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4,4'-DDE PESTANAL, 250 MG (2,2-BIS(4-CHL 标准品
Chloropropanol Kit (includes 8614.4)
Isofenphos
硫酸头孢喹诺
3,4-Methylenedioxytoluene, 10 标准品
2-Chloro-6-nitrotoluene (无证书)
Aldrin (TM) (random-13C4) Solution 100ug/ml in n-Nonane
DIMETHOXY-2'-HYDROXYCHALCONE, 2,4-(RG) 标准品
First Standard® 乙腈中草完隆溶液, 100μg/mL
氟虫腈溶液,100ppm