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    | product Name | pteridine |  
    | Synonyms | Pteridine; 1,3,5,8-Tetraazanaphthalene; Azinepurine; NSC 268562; Pyrazino(2,3-d)pyrimidine; Pyrimido(4,5-b)pyrazine |  
    | Molecular Formula | C6H4N4 |  
    | Molecular Weight | 132.1228 |  
    | InChI | InChI=1/C6H4N4/c1-2-9-6-5(8-1)3-7-4-10-6/h1-4H |  
    | CAS Registry Number | 91-18-9 |  
    | Molecular Structure |   |  
    | Density | 1.369g/cm3 |  
    | Boiling point | 265°C at 760 mmHg |  
    | Refractive index | 1.68 |  
    | Flash point | 124.7°C |  
    | Vapour Pressur | 0.0154mmHg at 25°C |  
    | Hazard Symbols |  |  
    | Risk Codes |  |  
    | Safety Description |  |  |