ZHENGZHOU FUYUAN CHEMICALS INDUSTRY CO.LTD.

specifications of Roxithronmycin EP2000

CONTENTS OF TESTING

STANDARDS

DESCRIRTION

WHITE CRYSTALLINE POWDER

IDENTIFICATION

A:The infrared absorption spectrumB:Thechromatograms

SPECIFIC OPTICAL ROTATION

-93^o --  -96^o

Appearance of solution

Clear and colourless

Related substances

The sum <3.0% Any single<0.5%

Ethanol and toluene

Ethanol<0.2% Toluene<0.1%

Water(%)

<3.0%

HEAVY METALS

<10ppm

Sulphate ash

<0.1%

Assay

97%--101%(the dried substance)

standard:

 Ep2000