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    | product Name | (2E)-4-oxopent-2-enedioic acid |  
    | Synonyms | 3,4-didehydro-2-ketoglutaric acid |  
    | Molecular Formula | C5H4O5 |  
    | Molecular Weight | 144.0823 |  
    | InChI | InChI=1/C5H4O5/c6-3(5(9)10)1-2-4(7)8/h1-2H,(H,7,8)(H,9,10)/b2-1+ |  
    | CAS Registry Number | 6004-32-6 |  
    | Molecular Structure |   |  
    | Density | 1.582g/cm3 |  
    | Boiling point | 330.5°C at 760 mmHg |  
    | Refractive index | 1.536 |  
    | Flash point | 167.9°C |  
    | Vapour Pressur | 3.23E-05mmHg at 25°C |  
    | Hazard Symbols |  |  
    | Risk Codes |  |  
    | Safety Description |  |  |