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 |  | Pranoprofen Basic information |  
  
 |  | Pranoprofen Chemical Properties |  
 | Melting point  | 182-183° |  | Boiling point  | 398.5°C (rough estimate) |  | density  | 1.1654 (rough estimate) |  | refractive index  | 1.5500 (estimate) |  | storage temp.  | 2-8°C |  | solubility  | DMSO (Slightly), Methanol (Slightly) |  | pka | 4.27±0.10(Predicted) |  | form  | powder |  | color  | white to beige |  | CAS DataBase Reference | 52549-17-4(CAS DataBase Reference) |  
  
| RIDADR  | UN 2811 6.1 / PGIII |  | RTECS  | DJ3100950 |  | Toxicity | LD50 in male mice, rats (mg/kg): 447.3, 87.3 orally (Edanaga) |  
  
 |  | Pranoprofen Usage And Synthesis |  
 | Chemical Properties | Off-White Solid |  | Originator | Niflan, Yoshitomi ,Japan ,1981 |  | Uses | Pranoprofen is an anti-inflammatory used in ophthalmology.
 |  | Definition | ChEBI: Pranoprofen is a pyridochromene. |  | Manufacturing Process | A mixture of 100 g of ethyl 2-cyano-2-(5H-[1]benzopyrano[2,3-b]-pyridin-7yl)propionate, 500 ml of glacial acetic acid and 200 g of concentrated hydrochloric acid is refluxed for 48 hours. The reaction mixture is concentrated, and the residue is dissolved in hot water. The solution is adjusted to pH 2 to 3 by addition of 10% sodium hydroxide. The resulting crystalline precipitate is washed thoroughly with water, and recrystallized from aqueous dioxane to give 74 g of 2-(5H-[1]benzopyrano[2,3-b]-pyridin-7yl)propionic acid as white crystals melting at 183°C to 183.5°C. |  | Therapeutic Function | Analgesic, Antiinflammatory |  | General Description | Pranoprofen is an arylalkanoic acid and a non-steroidal anti-inflammatory drug. |  | Biochem/physiol Actions | Pranoprofen is used in eyes to treat chronic allergic conjunctivitis. It is also used as an anti-inflammatory and analgesic drug after strabismus surgery. |  
  
 |  | Pranoprofen Preparation Products And Raw materials |  
  
 
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