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4,4'-二氨基-3,3'-二氯二苯甲烷 EPA 8000 系列标准品
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4,4-二溴二苯甲酮 | 3988-03-2 | 乐研
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First Standard® 甲醇中3,3‘-二甲苯-4,4’-二氨基二苯甲烷溶液,100μg/mL
4,4'-Diamino-3,3'-dimethyldiphenylmethane Solution in Methanol, 100μg/mLFirst Standard®天津
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一溴二氯甲烷标准溶液,75-27-4,analytical standard,1.01mg/ml in methanol,相对不确定度3%
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4,4'-双(二甲氨基)二苯基甲醇
'-二(N,N-二甲氨基)二苯基甲醇; 4,4'-四甲基米氏醇; N,N,N',N'-四甲基-4,4'-二氨基二苯基甲醇;米氏二聚水分子;Michler's Hydrol; N,N,N',N
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4,4'-二溴二苯甲酮,3988-03-2,97%
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4,4'-二溴二苯甲酮 | 3988-03-2 | 乐研
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4,4'-二氨基二苯醚,101-80-4,98%
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4,4'-二氟二苯甲烷,457-68-1,>99.0%(GC)
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4,4ˊ-二氯二苯基甲烷,101-76-8,≥95%
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