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          | Active Pharmaceutical Ingredient | 
         
       
	  
        
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                    Product Name: Melatonin 
                        CAS NO.: 73-31-4 
                        Description: 
 
| 
 Items  | 
 Specification  |  
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 Appearance:  | 
 A white-cream to light yellow powder  |  
| 
 Identification (UV):  | 
 Conforms to standard  |  
| 
 Melting point:  | 
 116-120 celsius degree  |  
| 
 Related substances:  | 
 Not more than 0.5%  |  
| 
 Loss on drying:  | 
 Not more than 0.5%  |  
| 
 Residue on ignition:  | 
 Not more than 0.1%  |  
| 
 Heavy metals:  | 
 Not more than 20ppm  |  
| 
 Residue solvents ethanol:   | 
 Not more than 1000ppm  |  
| 
 Assay (by HPLC):  | 
 Not less than 99%  |  
| 
 Microbiological tests: 
Total plate count: 
Molds and Yeasts: 
E. Coli 
Salmonella  | 
   
Not more than 3000/g 
Not more than 300/g 
Negative  
Negative  |    | 
                   
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