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PUNYW24791464 Dropropizine N,N-Dioxide
丙酮中敌草胺溶液标准样品
VALERIC ACID ETHYLESTER(SG) 标准品
4,4'-二(N,N-二甲氨基)二苯甲酮溶液,100ppm
Di-n-octyldiethyltin
5-(7-Acetyl-2-benzofuranyl)-3-(1,1-dimethylethyl)-2-oxazolidinone
16种氘代多环芳烃内标混标(食品中16 种欧盟优控多环芳烃-2018疾控系统风险监控)
2-Methylanthraquinone (无证书)
First Standard® 灭虫威亚砜
6-Bromohexanoic acid (无证书)