今天山西快乐十分开奖昨天
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    Propanediamide

    2014/2/7      view:

    Molecular formulaC3H6N2O2

    CAS  No.108-13-4

    assay:≥99.0%

    Appearancewhite needle crystalline

    Melting point:168-172.5°C

    今天山西快乐十分开奖昨天