<b id="4x2tl"><acronym id="4x2tl"></acronym></b>

<source id="4x2tl"><menu id="4x2tl"></menu></source>
  • 
    
    1. Tel:+86-713-8666233 / 8586558
      Huanggang Hengxingyuan Chemical Co., Ltd.
      Current location:Products
      Melatonin

      Molecular formula: C13H16N2O2
      Molecular weight: 232.28
      English name: Melatonin
      CAS number: 73-31-4

      project

      standard

      experimental result

      differentiate

      Infrared or nuclear resonance

      conforms

      Loss on drying

      0.5% MAX

               0.26%

      Ignition residue

      0.5% MAX

      0.17%

      heavy metal

      10 ppm MAX

              符合規定

      single impurity

      0.1% MAX

              符合規定

      Total impurities

                 1.0% MAX

              符合規定

      Assay

      (TCL)

      ≥99.0%

              ≥99.0%

      Assay

      (HPLC)

                ≥99.0%

               99.57%

      melting point

      117~120℃

      118.3~118.5℃

      Conclusion: This product meets the requirementsBP2018/USP39

      Back
      Copyright (C) 2023,Huanggang Hengxingyuan Chemical Co., Ltd. All Rights Reserved.Supported by ChemNet ChinaChemNet Toocle 31fabu Copyright Notice
      日本操逼视频_最新国产精品自在自线发布_黄色a视频_男女一级特黄A毛片视频播放
      <b id="4x2tl"><acronym id="4x2tl"></acronym></b>

      <source id="4x2tl"><menu id="4x2tl"></menu></source>
    2.