Florfenicol 
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Florfenicol 
Chemical Name 
Acetamide, 2, 2-dichloro-N-(1-fluoromethyl)-2-hydroxy-2-(4-(methyl sufonyll)phenyl)ethyl)-[R-(R*, S*)]- 
Standard CPV2005 
Chemical Structural 
Structural formula: C12H14Cl2FNO4S 
Molecular weight: 358.22 
Appearance 
White or almost white powder 
Microbiology 
Florfenicol is a synthetic, broad- spectrum antibiotic active against many gram-negative and gram-positive bacteria isolated from domestic animals. It is primaril bacteriostatic and acts by binding to the 50s ribosomal subunit and inhibiting bacterial protein synthesis. In vitro and in vivo activity has been demonstrated against commonly isolated bacterial pathogens involved in bovine respiratory disease (BBD) including Pasteurella haemonlytica, pasteurella multocida. And Haemophilus somnus, as well as against commonly isolated bacterial pathogens involved in bovine interdigital phlegmon including Fusobacterium necrophorum and Bacteroides melaninogenicus. 
Dosage 
Florfenicol is to be fed at 20 to 40g (20ppm-40ppm) per ton feed. 
Packing 
25kg/drum 
Store 
Store in a cool. Dry area. 
Standard: Conform to the Standard of Department of Agriculture 
Content: ≥ 99% 
Fnp: 152° C-156° C 
Impurity: ≤ 2% 
Specific optical rotation: -17.5° 
Acidity: pH4.5-6.5 
Chloride: 0.02% 
Fluorin Content: >4.8%