SHEET /m/4-aminobenzoic-acid · PubChem CID 978 · CAS 150-13-0 · REV 2026.07
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4-Aminobenzoic acid
from sourceC7H7NO2 · 137.14 g/mol
gamma-aminobenzoic acid · p-carboxyaniline · p-carboxyphenylamine · para-aminobenzoic acid
What is 4-Aminobenzoic acid?
PABA, once used as the original sunscreen before it was found to stain clothes and irritate skin. Bacteria need it to make their own folate. from source
CategoryNutrient
Fig. 1 · 2D structure RDKit
SMILES
C1=CC(=CC=C1C(=O)O)NWhere you'll find it
Curated by MoleculeFinder from source
Relative acute toxicity from source
Animal study data · LD50
- Reported LD50
- 6,000 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
6,000 mg/kg · very low toxicity · LD50 rat oral from source
4 more reported values
- 1,000 mg/kgLD50 · oral · dog
- 1,830 mg/kgLD50 · oral · rabbit
- 2,850 mg/kgLD50 · oral · mouse
- 2,000 mg/kgLD50 · iv · rabbit
WarningIrritantH315, H317, H319, H335, H412from source
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Where 4-Aminobenzoic acid leads
Relatedcomputed