p-hydroxybenzoic acid

Synonyms: 4-hydroxybenzoic acid, "4-carboxyphenol", "p-salicylic acid", "p-carboxyphenol", "para-hydroxybenzoic acid", "p-hydroxybenzoic acid"

Source: 4-hydroxybenzoic acid is used to derive paraben, a common preservative used in the cosmetic industry.

Identifiers:

IUPAC Name: 4-hydroxybenzoic acid
CAS Number: 99-96-7
PubChem ID: 135
InChiKey: FJKROLUGYXJWQN-UHFFFAOYSA-N
Canonical SMILES: C1=CC(=CC=C1C(=O)O)O

Structural Properties:

Molecular Formula: C₇H₆O₃
Molecular Weight: 138.12

Pharmacophore Features:

Number of bond donors: 2
Number of bond acceptors: 3
Number of atoms different from hydrogen: 10

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Evidence Supporting This Chemical as an Emerging Contaminant

Wang, Shuaijun, et al. "Phosphorous Doped Carbon Nitride Nanobelts for Photodegradation of Emerging Contaminants and Hydrogen Evolution." Applied Catalysis B: Environmental (2019): 117931.

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2D-structure

3D-structure