CAS No. 99-96-7

Batch: Purity:98
4-Hydroxybenzoic acid Chemical Structure
Chemical Structure
Check the 4-Hydroxybenzoic acid product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 99-96-7
Molecular Formula

C7H6O3

Molecular Weight (MW) 138.12
SMILES C1=CC(=CC=C1C(=O)O)O

Biological Activity

4-Hydroxybenzoic acid is a naturally occurring phenolic acid derivative that functions as an essential ring precursor in coenzyme Q biosynthesis. By supplying the aromatic core for ubiquinone production, it supports mitochondrial electron transport chain function and cellular oxidative phosphorylation. In addition to its metabolic role, 4-hydroxybenzoic acid exhibits notable antioxidant properties by scavenging reactive oxygen species and demonstrating antimicrobial activity. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 27 mg/mL (195.48 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

Reference

Jump to

Note: Technical data last updated: Sep 1, 2026.