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  1. Shanghai Fine Chemicals

    API • Vitamins • Food ingredients
    Veterinary Injection & Premix

    Doxycycline Hyclate

    TESTING ITEMS  
    CHARACETRS: YELLOW CRYSTALLINE POWDER
    IDENTIFICATION: HPLC
    SULPHURIC ACID REACTION A YELLOW COLOUR DEVELOPS
    IT GIVES REACTION OF CHLORIDES
    PH 2.0~3.0
    SPECIFIC ABSORBANCE AT 349nm E(1%) 300~355
    SPECIFIC OPTICAL ROTATION -105 ~ -120°
    HE**Y METALS: ≤50PPM
    LIGHT-ABSORBING IMPURITIES AT 490nm ≤0.07
    RELATED SUBSTANCES       6-EPIDOXYCYCLINE ≤2.0% METACYCLINE≤2.0% 4-EPIDOXYCYCLINE≤0.5% (EP5) 4-EPI-6-EPIDOXYCYCLINE≤0.5% (EP5) OXYTETRACYCLINE≤0.5% (EP5) ANY OTHER IMPURITY≤0.5% NOT IDENTIFIED IMPURITIES≤0.1% (EP5)
    ETHANOL 4.3~6.0% (m/m)
    SULPHATED ASH ≤0.4%
    WATER 1.4~2.8%
    ASSAY 95.0~102.0%( C22H25ClN2O8) BASED ON ANHYDROUS,ETHANOL-FREE SUBSTANCE
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