Yellow to orange crystalls or crystal powder.
Has a bitter taste.
Has the water absorbability, soluble in water and different concentrations of aqueous solution pH value is different.
Insoluble in ethanol, ether and chloroform.
Relatively stable when dry, but light has prompted the rapid deterioration in aqueous solution.
Riboflavin sal perlatum refers to a specialized pharmaceutical-grade riboflavin formulation, often denoted as Flavine. The core process involves crystallization of Vitamin B2 with specific excipients to enhance solubility and bioavailability. While standard riboflavin has the formula C17H20N4O6 (CAS: 83-88-5), this specific "sal" variant implies a salt derivative or distinct crystal habit optimized for parenteral or high-dose oral delivery systems.
Strictly avoid intravenous administration if not formulated specifically for injection; monitor for photosensitivity reactions. Store in airtight, light-proof containers below 25°C to prevent photodegradation and moisture absorption.