Description

4'-Methyl-4-Biphenylsulfonic Acid is a specialized organic sulfonic acid derivative, recognized for its role as a key synthetic intermediate and functional component in advanced chemical processes. Its value lies in its strong acidic character and biphenyl backbone, which imparts unique solubility and reactivity profiles essential for high-performance applications. This compound is primarily needed by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for synthesizing active ingredients, catalysts, and advanced materials.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a sulfonated biphenyl moiety.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators where its structural properties enhance biological activity.
• Catalyst & Ligand Precursor: Serves as a precursor for sulfonated ligands and organocatalysts used in asymmetric synthesis and fine chemical manufacturing.
• Polymer & Material Science: Incorporated into specialty polymers, ion-exchange resins, and advanced materials to modify solubility, acidity, and thermal stability.
• Dye & Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and organic pigments, improving water solubility and color fastness.
• Research & Development: Employed in academic and industrial R&D for exploring new synthetic methodologies and functional materials.

Basic Information

Product Name	4'-Methyl-4-Biphenylsulfonic Acid
CAS No.	91903-24-1
Molecular Formula	C13H12O3S
Molecular Weight	248.30 g/mol
Synonyms	4-(4-Methylphenyl)benzenesulfonic Acid; [1,1'-Biphenyl]-4-sulfonic Acid, 4'-Methyl-; p-Tolyl-4-sulfonic Acid; 4'-Methylbiphenyl-4-sulfonic Acid; 4-(p-Tolyl)benzenesulfonic Acid; 4-Methyl-4'-biphenylsulfonic Acid; 4'-Methyl[1,1'-biphenyl]-4-sulfonic Acid
EINECS	Contact for details

Quality Control

Our 4'-Methyl-4-Biphenylsulfonic Acid is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and related substances, to meet exacting customer specifications. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its strong acid/organic solvent nature, keep away from incompatible materials such as strong bases and oxidizing agents. The container must be kept tightly sealed to protect from moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in common organic solvents

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.