| Properties: | |
| Orange to yellow, hygroscopic powder. Nearly odorless. Soluble in water; nearly insoluble in alcohol, benzene, chloroform and ether; dextrorotatory. Dry powder is unstable and on standing loses biological activity by liberation of formaldehyde. | |
| Derivation: | |
| Action of formaldehyde on riboflavin in weakly alkaline solutions. | |
| Use: | |
| Nutrition, vitamin source. | |