CAS number: 73231-34-2

Molecular formula: C12H14Cl2FNO4S

molecular weight: 358.21

Chemical structure:

Products name Florfenicol
Shelf life2 years
Test item Acceptatce critoroaResults
SolubilityVery soluble in dimethylformamide soilble in methanol sparingly soluble in Glacial acetic acid, very slighltly soluble in water or in chloroform comform
IdentificationA Infrared Absorption--the IR spectrum is accordant with the spextrum obtained with lorfenicol RS conforms 
B The Retention time of the major peak in the chromatogram of the sample preparation corresponds to that of the standard preparation as obtained in the assayconforms
Loss on drying Not more than 0.5%0.15%
Specific optical rotation -16℃to--19℃-17.9℃
Melting point 152-156℃155.3℃
ChloridesNot more than 0.02%≤0.02%
Sulphated ash Not more thanb 0.1%≤0.1%
Heavy Metals Not more than 20ppm≤20ppm
Assay not less than 98.0%99.3%
Conclusion Complies with in-house standar