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  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
  • Shanghai Fine Chemicals Co.,Ltd
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Doxycycline Hyclate
 

TESTING ITEMS                               SPECIFICATION                

 

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°

HEAVY 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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