4-MSAK

Potassium 4-Methoxysalicylate: English Introduction

Chemical Name:
Potassium 4-methoxy-2-hydroxybenzoate (IUPAC name). It is also referred to as potassium 4-methoxysalicylate, derived from salicylic acid with a methoxy group at the 4-position.

Structural Formula:
The compound features a benzene ring with three substituents:

• A carboxylate group (-COO⁻) at position 1,

• A hydroxyl group (-OH) at position 2,

• A methoxy group (-OCH₃) at position 4.
  The potassium ion (K⁺) serves as the counterion for the carboxylate group.

Molecular Formula:
C₈H₇KO₄

Physical Properties:

• Appearance: Typically a white to off-white crystalline powder.

• Solubility: Highly soluble in water and polar solvents like ethanol due to its ionic nature.

• Stability: More stable than the free acid form, with enhanced shelf life under standard conditions.

Chemical Properties:

• Acidity: The hydroxyl group at position 2 retains weak acidity, characteristic of phenolic compounds.

• Reactivity: May act as a chelating agent or participate in electrophilic substitution reactions typical of aromatic systems.

• Functional Groups: Combines hydrophilic (carboxylate, hydroxyl) and lipophilic (methoxy) properties, influencing its bioavailability.

Synthesis:
Commonly synthesized via neutralization of 4-methoxysalicylic acid with potassium hydroxide (KOH):

4-Methoxysalicylic Acid+KOH→Potassium 4-Methoxysalicylate+H2O4-Methoxysalicylic Acid+KOH→Potassium 4-Methoxysalicylate+H2​O

The reaction is typically conducted in aqueous or alcoholic media under controlled temperature.

Applications:

• Pharmaceuticals: Utilized in topical formulations for its potential anti-inflammatory and antimicrobial properties, akin to salicylate derivatives.

• Cosmetics: Incorporated into skincare products as a stabilizing agent or active ingredient for acne treatment.

• Industrial: Serves as an intermediate in organic synthesis or a corrosion inhibitor in niche applications.