Riboflavin

C₁₇H₂₀N₄O₆

IUPAC: 7,8-Dimethyl-10-((2R,3R,4S)-2,3,4,5-tetrahydroxypentyl)benzo[g]pteridine-2,4(3H,10H)-dione

CAS: 83-88-5

Overview

Riboflavin (vitamin B2) is an essential water-soluble vitamin that functions as a component of the coenzymes FAD and FMN. These coenzymes are critical for energy metabolism, cellular respiration, and the metabolism of fats, drugs, and steroids.

Composition

Element	Symbol	Atoms	Atomic Mass
Hydrogen	H	20	1.0080
Carbon	C	17	12.0110
Nitrogen	N	4	14.0070
Oxygen	O	6	15.9990

Elemental Composition

Hydrogen ×20

5.4%

Carbon ×17

54.3%

Nitrogen ×4

14.9%

Oxygen ×6

25.5%

Uses

• Coenzyme (FAD, FMN) component
• Food coloring (E101, bright yellow)
• Dietary supplement
• Migraine prophylaxis

Fun Facts

✦ The bright yellow color of B-vitamin supplements and energy drinks comes from riboflavin

Safety

⚠ Non-toxic (water-soluble, excess is excreted)
⚠ Turns urine bright yellow

Structure

SMILES

CC1=CC2=C(C=C1C)N(C3=NC(=O)NC(=O)C3=N2)CC(C(C(CO)O)O)O

Properties

Type: organic
State: solid
Molar Mass: 376.36 g/mol
Density: 1.6500 g/cm³
Melting Point: 282.0 °C
Solubility: 0.12 g/L at 25°C

Molecular Descriptors

Exact Mass: 376.1383
XLogP: -1.5
TPSA: 155.0 Å²
H-Bond Donors: 5
H-Bond Acceptors: 7
Rotatable Bonds: 5
Heavy Atoms: 27
Complexity: 680.0

Also Known As

Vitamin B2

Related Compounds

1,2-Dichloroethane

C₂H₄Cl₂

1,3-Butadiene

C₄H₆

1,4-Dioxane

C₄H₈O₂

1-Butanol

C₄H₁₀O

2-Propanol

C₃H₈O

Acetaldehyde

CH₃CHO

Acetamide

C₂H₅NO

Acetic Anhydride

C₄H₆O₃

Acetone

(CH₃)₂CO

Acetonitrile

C₂H₃N

Frequently Asked Questions

What is Riboflavin?

Riboflavin (C₁₇H₂₀N₄O₆) is a organic compound with the IUPAC name 7,8-Dimethyl-10-((2R,3R,4S)-2,3,4,5-tetrahydroxypentyl)benzo[g]pteridine-2,4(3H,10H)-dione.

What is the molecular weight of Riboflavin?

Riboflavin has a molar mass of 376.364 g/mol.

What state is Riboflavin at room temperature?

Riboflavin is a solid at room temperature.

Is Riboflavin organic or inorganic?

Riboflavin is classified as an organic compound.

What elements make up Riboflavin?

Riboflavin (C₁₇H₂₀N₄O₆) is composed of Hydrogen (H), Carbon (C), Nitrogen (N), Oxygen (O).