Molecular Weight

462.45

Molecular Structure

Packing

25kg/drum

Capacity

Production upon order

Storage

Store in a tightly sealed container away from heat and direct light, and in a cool dry place.

Application

antibacterial

Appearance

 Yellow crystalline power

Solubility

Very slightly soluble in water and in alcohol. It dissolves in dilute solutions of mineral acids and in    solutions of alkali hydroxides and carbonates.

Identification

A:Examine the chromatograms obtained in the assay
     B:Reaction with sulphuric acid
     C:Reaction of chlorides

PH

5.0 to 6.5

Specific optical rotation

-113°to  -130°

Specific Absorbance (349nm)

325 to 363

Light-absorbing Impurities(490nm)

≤0.07%

Related Substances:

Impurity A (6-epidoxycycline)

≤1.5%

Impurity B(metacycline)

≤1.0%

Impurity C

≤0.1%

Impurity D

≤0.1%

Impurity E

≤0.1%

Impurity F

≤0.5%

Any other umpurity

≤0.1%

Total

≤2.5%

Ethanol

≤5000 ppm

Heavy Metals

≤50 ppm

Water

 3.6% to 4.6%

Sulfated Ash

≤0.4%

Assay: Content of C22H24N2O8 (Anhydrous and ethanol-free substance)

95.0% to 102.0%

Standard

CP2010