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