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9种有机氯混标 BePure-30775XT
醛酮-DNPH定制混标
DIHYDROCARVYLACETATE, (+)-(SG) 标准品
o-Phenylenediamine dihydrochloride (无证书)
Chlorobenzilate Solution in Hexane
甲醇中4-氯苯氧基乙酸
去氢木香内酯 对照品
3-Benzoyloxystigmasta-5,22-diene
Washington EPH Matrix Spiking Mixture (repkg) 250ug/ml in Acetone
4-Chloro-alpha,alpha,alpha-trifluorotoluene,certified 标准品