Description

Benzeneacetic Acid, -α--Ethyl--α-,4-Dimethyl-, (S)- (9Ci) is a chiral, non-racemic organic compound belonging to the class of substituted phenylacetic acid derivatives. This high-purity, single-enantiomer intermediate is critical for applications requiring precise stereochemistry and consistent molecular structure. It is primarily utilized by research institutions and manufacturers in the pharmaceutical and fine chemical sectors for the synthesis of advanced active pharmaceutical ingredients (APIs) and other specialty compounds. The product is supplied under stringent quality control to ensure reliability for sensitive synthetic pathways.

Application

• Pharmaceutical Intermediate: A key chiral building block in the research and development of novel therapeutic agents, particularly for central nervous system (CNS) and anti-inflammatory drugs.
• Asymmetric Synthesis: Employed in stereoselective chemical reactions to construct complex molecules with high enantiomeric excess (ee).
• Fine Chemical Production: Used in the manufacture of specialty chemicals, including advanced ligands, catalysts, and fragrances.
• Academic & Industrial Research: Serves as a standard or starting material in medicinal chemistry and process chemistry research programs.
• Agrochemical Development: Potential intermediate in the synthesis of chiral pesticides or herbicides.

Basic Information

Product Name	Benzeneacetic Acid, -α--Ethyl--α-,4-Dimethyl-, (S)- (9Ci)
CAS No.	141045-47-8
Molecular Formula	C12H16O2
Molecular Weight	192.26 g/mol
Synonyms	(S)-2-Ethyl-2-(4-methylphenyl)propanoic acid; (S)-α-Ethyl-α,4-dimethylbenzeneacetic acid; (S)-2-(4-Methylphenyl)-2-ethylpropanoic acid; (S)-2-Ethyl-2-p-tolylpropanoic acid; (S)-p-Methyl-α-ethylhydratropic acid; (S)-2-(4-Methylphenyl)pentanoic acid (tautomeric form); (S)-Benzeneacetic acid, α-ethyl-α,4-dimethyl-; (S)-Homoaporphine intermediate derivative
EINECS	Contact for details

Quality Control

Our Benzeneacetic Acid, -α--Ethyl--α-,4-Dimethyl-, (S)- (9Ci) is produced and handled under a strict quality management system. Each batch undergoes comprehensive analytical testing, including chiral purity (HPLC), chemical identity (IR, NMR), and assay determination, to ensure it meets exacting standards for research and production use. A detailed Certificate of Analysis (COA) documenting purity, enantiomeric excess, and impurity profiles is provided with every shipment.

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. Due to its light-sensitive nature, containers should be kept in amber glass or opaque packaging during storage.

Specification

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

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