SHEET /m/quercetin · PubChem CID 5280343 · CAS 117-39-5 · REV 2026.07
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Quercetin from source
C15H10O7 · 302.23 g/mol
Meletin · Sophoretin · Xanthaurine · Quercetine
polyphenol of the family of flavonoids
CategoryPlant
Chemical familyAromatics
Fig. 1 · 2D structure RDKit
C1=CC(=C(C=C1C2=C(C(=O)C3=C(C=C(C=C3O2)O)O)O)O)O
Where you'll find it
Not yet mapped to everyday foods or products.
The dose makes the poison inferred
A reported mouse oral LD50 for Quercetin is 160 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
11.2 g
a median lethal dose scaled to 154 lb (11,200 mg)
“The dose makes the poison” is a cross-species estimate shown as neutral science, not a threshold anyone should act on. Real toxicity depends on the person, not body mass alone.
Toxicity & hazards
Toxicity · LD50
160 mg/kg · moderately toxic · LD50 mouse oral from source
The dose lens above scales this to a body weight.
3 more reported values
- 161 mg/kgLD50 · oral · rat
- 18 mg/kgLD50 · iv · mouse
- 100 mg/kgLD50 · other · mouse
DangerToxicH301from source
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