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First Standard® 除虫脲
氯苯氧乙酸钠 BePure-21246
HYDROXYPALMITIC ACID, 2-(RG) 标准品
乙嘧酚磺酸酯
Etoxazole
2,2',4,4'-Tetrachlorobiphenyl 99% (BZ# 47) 标准品
2-Azido-3,7,8-trimethyl-3H-imidazo[4,5-f]quinoxaline-d3
Ammonium phosphated castor oil
GPC标样-尼龙-66(Mw 46200) 标准品
Chlorinated Herbicides as Methyl Derivatives 标准品