Vitamin B2 (Riboflavin)​ 98%

CAS number: 83-88-5

Molecular formula: C17H20N4O6

molecular weight: 376.3639

Chemical structure:

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, %
≤0.30.1
Lumiflavin
440nm Absorbance≤0.0250.008
Assay (on dried basis)%
98.0~102.0
99.1
Conclusion: The above analytical results conform to USP37.