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    Vitamin B2 (Riboflavin)? 98%

    CAS number： 83-88-5

    Molecular formula：

    molecular weight：

    Chemical structure：

    Details

    Product Name
    		 Vitamin B2 (Riboflavin)
    Shelf Life
    		 3 years
    Test
    		 Specification
    		 Results
    Appearance
    		 A yellow or orange yellow crystalline powder
    		 Yellow crystalline powder
    Identification
    		 A solution of 1 mg in 100ml of water is pale greenish yellow by transmitted light, and has an intense yellowish-green fluorescence that disappears upon the addition of mineral acids or alkalies
    		 Conform
    Specific rotation, ° -115~-135
    		 -122
    Loss on drying, %
    		 ≤1.5
    		 0.10
    Residue on ignition, %
    		 ≤0.3 0.1
    Lumiflavin
    		 440nm Absorbance≤0.025 0.008
    Assay (on dried basis)%
    		 98.0~102.0
    		 99.1
    Conclusion: The above analytical results conform to USP37.