Description

Butanedioic Acid, 2-Bromo-3-Ethyl-, 1-Ethyl 4-Methyl Ester, (2R,3S)-Rel- (9Ci) is a high-purity, stereochemically defined chiral building block. This compound is critical for the synthesis of complex molecules where precise stereochemistry and functional group compatibility are paramount. It is primarily sought after by research and development teams in the pharmaceutical and advanced agrochemical sectors for constructing novel active ingredients and intermediates.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of new active pharmaceutical ingredients (APIs), particularly in stereoselective synthesis.
• Agrochemical Synthesis: Used in the creation of advanced, enantiomerically pure herbicides, fungicides, and plant growth regulators.
• Organic Synthesis Research: Serves as a versatile building block in academic and industrial laboratories for methodological development and complex molecule construction.
• Ligand and Catalyst Precursor: Potential use in the development of chiral ligands and organocatalysts for asymmetric transformations.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals requiring high stereochemical fidelity.

Basic Information

Product Name	Butanedioic Acid, 2-Bromo-3-Ethyl-, 1-Ethyl 4-Methyl Ester, (2R,3S)-Rel- (9Ci)
CAS No.	500137-40-6
Molecular Formula	C9H15BrO4
Molecular Weight	267.12 g/mol
Synonyms	rel-(2R,3S)-2-Bromo-3-ethylsuccinic acid 1-ethyl 4-methyl ester; 1-Ethyl 4-methyl (2R,3S)-2-bromo-3-ethylsuccinate; (2R,3S)-rel-2-Bromo-3-ethylsuccinic acid ethyl methyl ester; Ethyl methyl (2R,3S)-rel-2-bromo-3-ethylsuccinate; 2-Bromo-3-ethylsuccinic acid 1-ethyl 4-methyl ester, (2R,3S)-rel-; Succinic acid, 2-bromo-3-ethyl-, 1-ethyl 4-methyl ester, (2R,3S)-rel-
EINECS	Contact for details

Quality Control

Our production of this chiral intermediate adheres to strict quality management protocols. Every batch is characterized using advanced analytical techniques including chiral HPLC, NMR, and GC/MS to ensure high chemical and enantiomeric purity. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your regulatory and R&D documentation 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 (typically 15-25°C). Keep away from strong acids and incompatible organic solvents. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
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.