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4-tert-Butyl-d9-phenol-2,3,5,6-d4
Crotonaldehyde 2,4-Dinitrophenylhydrazone-d3
First Standard® 甲苯中生物苄呋菊酯溶液, 1000μg/mL
2,6-二氯酚
抑芽唑
2,3-二氯硝基苯 标准品
Potassium Dihydrogen Phosphate, (KH2PO4)
First Standard® 甲醇中45种农药及其代谢物混标溶液(LC检测),10μg/mL
盐酸甲烯土霉素
久效磷溶液,1000ppm