Description

Butanedioic Acid, Methyl-, 4-(Phenylmethyl) Ester, (2S)- (9Ci) is a chiral, non-racemic organic compound belonging to the class of succinic acid derivatives, serving as a valuable synthetic intermediate. Its defined stereochemistry and functional groups make it a critical building block for the synthesis of complex molecules where precise spatial orientation is required. This high-purity intermediate is essential for research and production in the pharmaceutical and fine chemical industries, particularly for developing active pharmaceutical ingredients (APIs) and advanced materials.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the multi-step synthesis of potential drug candidates, especially for central nervous system (CNS) and cardiovascular targets.
• Asymmetric Synthesis: Utilized as a starting material or intermediate in stereoselective reactions to construct complex molecular architectures.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, including advanced polymers, liquid crystals, and performance materials.
• Agrochemical Research: Used in the development of novel, chiral active ingredients for crop protection products.
• Academic & R&D: Serves as a reference standard and a reagent in methodological development for organic and medicinal chemistry research.
• Flavor & Fragrance Precursor: Potential use in the synthesis of complex ester-based aroma compounds.

Basic Information

Product Name	Butanedioic Acid, Methyl-, 4-(Phenylmethyl) Ester, (2S)- (9Ci)
CAS No.	143225-26-7
Molecular Formula	C13H16O4
Molecular Weight	236.26 g/mol
Synonyms	(2S)-Methyl 4-(benzyloxy)-4-oxobutanoate; (S)-Methyl 4-(benzyloxy)-4-oxobutanoate; Methyl (S)-4-(benzyloxy)-4-oxobutanoate; (S)-4-(Benzyloxy)-4-oxobutanoic acid methyl ester; Succinic acid, methyl-, 4-(phenylmethyl) ester, (2S)-; L-Form of Methyl 4-(Benzyloxy)-4-oxobutanoate; Benzyl (S)-4-methoxy-4-oxobutanoate (tautomeric form)
EINECS	Contact for details

Quality Control

Our Butanedioic Acid, Methyl-, 4-(Phenylmethyl) Ester, (2S)- (9Ci) is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for pharmaceutical and advanced synthetic applications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and enantiomeric excess.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
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.