SHEET /m/phenylacetic-acid · PubChem CID 999 · CAS 103-82-2 · REV 2026.07
Phenylacetic acid
from sourceC8H8O2 · 136.15 g/mol
α-toluic acid · benzeneacetic acid · alpha-toluic acid · PA
What is Phenylacetic acid?
The honey-like sweet note in a small amount and something closer to a barnyard in a large one. It also occurs in the body as a phenylalanine breakdown product. Found in honey. from source
Fig. 1 · 2D structure RDKit
C1=CC=C(C=C1)CC(=O)OWhere you'll find it
Curated by MoleculeFinder from source
The dose makes the poison inferred
A reported rat oral LD50 for Phenylacetic acid is 2,250 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
“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
2,250 mg/kg · very low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
3 more reported values
- 2,250 mg/kgLD50 · oral · mouse
- 1,500 mg/kgLD50 · other · mouse
- 2,270 mg/kgLD50 · other · mouse
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