Chloramphenicol Levo

CAS number:56-75-7

Molecular formula:C11H12Cl2N2O5

molecular weight:323.1294

Chemical structure:

Product name
Shelf Life
1 year
Items Standard Result
Characters A white, greyish-white or yellowish-white,fine,crystalline powder or fine
A yellowish-white,fine crystalline powder
Slightly soluble in water,freely soluble in alcohol and in propylene glycol. Its alcohol solution is dextrorotatory and its ethyl acetate solution is levorotatory Qualified
Identification Melting point: 149°C〜153°C 149 C-152°C
1R Qualified
Colar reaction
Gives reaction of chlorides
Acidity or alkalinity Meets the requirements Qualified
Specific optical rotation + 18.5° 〜+20_5o + 19.8°
Related Substances
Individual impurity<0. 5% Qualified
Chlorides < 0. 01% Qualified
Loss on drying < 0. 5% 0.10%
Sulphated ash < 0. 1% 0.04%
Assay 98.0% 〜102.0% 99.7%
Microbial limit Bacteria Not more than 10 per g Qualified
Mold & yeast Absent per g
Escherichia coli Absent per g
Pseudomonas aeruginosa & staphylococcus aureus Absent per g
Sterility Complies Qualified
CONCLUSION: The product complies to the standard of BP2011.