Description

Benzeneacetic Acid, 4-Carboxy--α--Methyl-, -α--Butyl Ester, (S)- (9Ci) is a chiral, non-racemic organic compound that serves as a valuable synthetic intermediate in advanced chemical synthesis. Its precise stereochemistry and functional groups make it a critical building block for creating complex molecules with high enantiomeric purity. This compound is primarily sought by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for the development of active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the research and production of enantiomerically pure active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring specific stereochemistry.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides where the (S)-enantiomer configuration is essential for biological activity.
• Fine Chemical Manufacturing: Serves as a versatile precursor in the synthesis of complex fragrances, flavors, and other high-value specialty chemicals.
• Academic & Industrial Research: A valuable reagent for methodological development in asymmetric synthesis and catalysis studies within R&D laboratories.
• Material Science: Potential monomer or modifying agent in the synthesis of specialized polymers with tailored optical or mechanical properties.

Basic Information

Product Name	Benzeneacetic Acid, 4-Carboxy--α--Methyl-, -α--Butyl Ester, (S)- (9Ci)
CAS No.	161262-15-3
Molecular Formula	C15H18O5
Molecular Weight	278.30 g/mol
Synonyms	(S)-α-Butyl 4-Carboxy-α-methylbenzeneacetate; (S)-2-(4-Carboxyphenyl)-2-methylbutanoic acid butyl ester; Butyl (S)-2-(4-carboxyphenyl)-2-methylpropionate; (S)-Butyl 2-(4-carboxyphenyl)-2-methylpropanoate; (S)-α-Butyl p-carboxy-α-methylphenylacetate; (S)-4-Carboxy-α-methylbenzeneacetic acid α-butyl ester; (S)-Butyl 4-carboxy-α-methylbenzeneacetate; (S)-2-(4-Carboxybenzyl)-2-methylbutyric acid butyl ester
EINECS	Contact for details

Quality Control

Our production of Benzeneacetic Acid, 4-Carboxy--α--Methyl-, -α--Butyl Ester, (S)- (9Ci) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high enantiomeric purity. Each lot is subjected to comprehensive analytical testing, including chiral HPLC for enantiomeric excess (ee) determination, NMR, and IR for structural confirmation. Certificates of Analysis (COA) detailing purity, assay, 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). Keep away from heat, sparks, and open flame. For long-term storage, consider maintaining the material under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Purity (Chiral HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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