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Benz[a]anthracene-7,12-dione(Benzanthraquinone) 标准品
6-Nitrobenzo[a]pyrene-d11
?-Naphthylpropylketone
灭藻醌溶液,100ppm
砜吸磷-S-亚砜 Bepure-21696
Fenitrooxon-d6 (O,O-dimethyl-d6) 标准品
4,4',6,6'-Tetranitro-2,2'-azotoluene 标准品
Prothioconazole
Quality Control Standard - 7-M
Petroleum ether (BP range 30-60C) (无证书)