Description

Benzeneacetic Acid, 4-Carboxy--α--Methyl-, -α--Propyl Ester, (S)- (9Ci) is a high-purity, single-enantiomer chiral intermediate of significant importance in advanced organic synthesis. This compound matters for its role as a critical building block in the development of optically active pharmaceuticals and fine chemicals, where stereochemical purity is paramount. It is primarily needed by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for producing active ingredients and novel materials.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of non-steroidal anti-inflammatory drugs (NSAIDs) and other active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the research and production of enantiomerically pure herbicides, fungicides, and plant growth regulators.
• Fine Chemical Production: Serves as a versatile building block for creating complex molecules in specialty chemistry applications.
• Asymmetric Catalysis Research: Employed as a standard or substrate in developing and testing new chiral catalysts and synthetic methodologies.
• Material Science: Potential use in the synthesis of chiral liquid crystals or advanced polymeric materials with specific optical properties.

Basic Information

Product Name	Benzeneacetic Acid, 4-Carboxy--α--Methyl-, -α--Propyl Ester, (S)- (9Ci)
CAS No.	161262-16-4
Molecular Formula	C14H16O4
Molecular Weight	248.27 g/mol
Synonyms	(S)-2-(4-Carboxyphenyl)propionic Acid Propyl Ester; (S)-α-Propyl 4-Carboxy-α-methylbenzeneacetate; (S)-Naproxen Propyl Ester; (S)-2-(6-Methoxynaphthalen-2-yl)propionic Acid Propyl Ester (related derivative); (S)-2-(4-Carboxybenzyl)propanoic Acid Propyl Ester; (S)-4-Carboxy-α-methylbenzeneacetic Acid α-Propyl Ester; Propyl (S)-2-(4-carboxyphenyl)propanoate
EINECS	Contact for details

Quality Control

Our Benzeneacetic Acid, 4-Carboxy--α--Methyl-, -α--Propyl Ester, (S)- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure compliance with exacting customer and research standards. Certificates of Analysis (COA) detailing identity, purity, and enantiomeric excess are available upon request.

Storage

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

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%

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