Description

4-Methoxyphenyl 4-Methylbenzenesulfonate is a high-purity sulfonate ester derivative, serving as a versatile chemical intermediate and protecting group reagent in advanced organic synthesis. Its value lies in its specific reactivity, enabling the controlled introduction or protection of functional groups in complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring phenol protection/deprotection strategies.
• Agrochemical Synthesis: Used in the development and production of advanced herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a monomer or chain transfer agent in the production of specialty polymers with tailored properties.
• Dye & Pigment Manufacturing: Intermediate for synthesizing complex organic dyes and colorants.
• Liquid Crystal & OLED Materials: Precursor in the creation of advanced electronic and display materials.
• Cross-Coupling Reactions: Serves as an electrophilic coupling partner in palladium-catalyzed reactions for C-O bond formation.
• Chemical Research & Development: A valuable tool for chemists in academia and R&D for method development and exploring new synthetic pathways.

Basic Information

Item	Details
Product Name	4-Methoxyphenyl 4-Methylbenzenesulfonate
CAS No.	3899-91-0
Molecular Formula	C14H14O4S
Molecular Weight	278.32 g/mol
Synonyms	p-Methoxyphenyl p-toluenesulfonate; 4-Methoxyphenyl tosylate; Tosyl anisole; Anisole, 4-tosyloxy-; p-Toluenesulfonic acid 4-methoxyphenyl ester; 4-Methylbenzenesulfonic acid 4-methoxyphenyl ester; 4-Methoxy phenyl tosylate; PTAT
EINECS	Contact for details

Quality Control

Every batch of our 4-Methoxyphenyl 4-Methylbenzenesulfonate is produced and tested under a strict quality management system. We employ advanced analytical techniques including HPLC, GC, and NMR to ensure identity, purity, and consistency meet the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and support your quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Ensure the container is kept tightly sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5% Total impurities ≤ 1.5%

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