Description

4-Methyl-Benzoic Acid tert-Butyl Ester is a high-purity organic ester compound, serving as a versatile and protected intermediate in advanced chemical synthesis. Its value lies in the tert-butyl ester group, which provides steric bulk and stability, making it a crucial building block for creating complex molecules with specific functional properties. This compound is primarily needed by R&D laboratories and production facilities in the pharmaceutical, agrochemical, and specialty chemical industries for developing active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly where a protected carboxylic acid group is required.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and plant growth regulators.
• Liquid Crystal & OLED Material Precursor: Serves as a starting material for synthesizing organic electronic chemicals and advanced display materials.
• Polymer Modification Agent: Employed to introduce specific aromatic ester functionalities into polymer chains to alter material properties.
• Organic Synthesis & Catalysis Research: A valuable reagent in academic and industrial R&D for method development and creating novel molecular architectures.
• Fragrance & Flavor Intermediate: Used in the controlled synthesis of aromatic compounds for specialty fragrance applications.

Basic Information

Product Name	4-Methyl-Benzoic Acid tert-Butyl Ester
CAS No.	13756-42-8
Molecular Formula	C12H16O2
Molecular Weight	192.26 g/mol
Synonyms	p-Toluic Acid tert-Butyl Ester; 4-Methylbenzoic Acid 1,1-Dimethylethyl Ester; tert-Butyl 4-Methylbenzoate; 1,1-Dimethylethyl 4-Methylbenzoate; Butyl 4-Methylbenzoate; p-Toluic Acid 1,1-Dimethylethyl Ester; 4-Methyl-Benzoic Acid 1,1-Dimethylethyl Ester; Benzoic acid, 4-methyl-, 1,1-dimethylethyl ester
EINECS	Contact for details

Quality Control

Our 4-Methyl-Benzoic Acid tert-Butyl Ester is produced under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and consistent performance. Certificates of Analysis (COA) with detailed specifications are provided for each shipment, supporting compliance in cGMP and ISO 9001 environments where applicable.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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