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正三十二烷 (D66, 98%) 标准品
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Massachusetts EPH Aromatic Hydrocarbon Standards Mixture 1000ug/ml in Methylene chloride
环戊噻嗪
1-乙氧基-2-丙醇(标准品)[1569-02-4]
Trihalomethanes Solutions
First Standard® 乙腈中中异菌脲溶液,100μg/mL
Diphenyl acetaldehyde (无证书)
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