Riboflavin

Riboflavin is an organic compound with the molecular formula C17H20N4O6.

Formula
C17H20N4O6
Molar mass
376.4 g/mol
Also known as
7,8-dimethyl-10-[(2S,3S,4R)-2,3,4,5-tetrahydroxypentyl]benzo[g]pteridine-2,4-dione, vitamin B2, Riboflavine, Lactoflavin, Vitamin G, Lactoflavine, Flavaxin

Overview

Riboflavin is an organic compound with the molecular formula C17H20N4O6.

Identifiers

Formula
C17H20N4O6
Molar mass
376.4 g/mol
Also known as
7,8-dimethyl-10-[(2S,3S,4R)-2,3,4,5-tetrahydroxypentyl]benzo[g]pteridine-2,4-dione, vitamin B2, Riboflavine, Lactoflavin, Vitamin G, Lactoflavine, Flavaxin
Chemical identifiers
SMILES
CC1=CC2=C(C=C1C)N(C3=NC(=O)NC(=O)C3=N2)C[C@@H]([C@@H]([C@@H](CO)O)O)O
InChI
InChI=1S/C17H20N4O6/c1-7-3-9-10(4-8(7)2)21(5-11(23)14(25)12(24)6-22)15-13(18-9)16(26)20-17(27)19-15/h3-4,11-12,14,22-25H,5-6H2,1-2H3,(H,20,26,27)/t11-,12+,14-/m0/s1
PubChem CID
493570

Properties

Melting / decomposition
MP: Decomposes at 278-282 °C (darkens at about 240 °C)
Water solubility
In water, of 0.1 g/L at 20 °C; 0.071 g/L and 0.085 g/L at 25 °C
Data availability

Not published: Boiling Point, Density.

References

  1. PubChem Compound Summary: Riboflavin (CID 493570)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. Hazardous Substances Data Bank (HSDB): Riboflavin — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/493570#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 1413

  3. Hazardous Substances Data Bank (HSDB): Riboflavin — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/493570#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky SH, Dannenfelser RM; The AQUASOL dATAbASE of Aqueous Solubility. Ver 5. Tucson, AZ: Univ AZ, College of Pharmacy (1992)