Riboflavin

from source

C17H20N4O6 · 376.4 g/mol

vitamin G · Flavaxin · Ribosyn · Vitaflavine

What is Riboflavin?

Vitamin B2, the pigment that makes a B-complex vitamin bright yellow and, taken in excess, turns urine fluorescent yellow-green. Found in beer, eggs, milk, mushrooms, and breakfast cereal. from source

CategoryNutrient

Chemical familyAlcohols Aromatics

LeaderboardsBiggest Deadliest

Fig. 1 · 2D structure RDKit

SMILESCC1=CC2=C(C=C1C)N(C3=NC(=O)NC(=O)C3=N2)C[C@@H]([C@@H]([C@@H](CO)O)O)O

Where you'll find it

Beerwhat else is in it →Eggswhat else is in it →Milkwhat else is in it →Mushroomswhat else is in it →Breakfast cerealwhat else is in it →

Curated by MoleculeFinder from source

Relative acute toxicity from source

Animal study data · LD50

Reported LD50: 10,000 mg/kg · very low toxicity
Species: rat
Route: oral

An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.

Toxicity & hazards

Toxicity · LD50

10,000 mg/kg · very low toxicity · LD50 rat oral from source

2 more reported values

560 mg/kgLD50 · other · rat
5,000 mg/kgLD50 · other · rat

Keep roaming

Where Riboflavin leads

Sources & methodology

PubChem CID: 493570
Wikidata: Q130365
Structure: PubChem → RDKit
LD50: PubChem
Similar molecules: MoleculeFinder fingerprint similarity
Everyday relationships: MoleculeFinder editorial curation
Data refreshed: October 19, 2026

How MoleculeFinder sources and labels its data