Description

2H-Pyran-6-Carboxylicacid,2-Ethoxy-3,4-Dihydro-4-Methyl-,Ethylester,(2S,4S)-(9Ci) is a high-purity, stereochemically defined chiral intermediate of significant value in advanced organic synthesis. This compound matters because its specific (2S,4S) configuration and functionalized pyran core make it a critical building block for constructing complex molecules with precise stereochemistry. Pharmaceutical R&D and fine chemical manufacturers need this material for the development of active pharmaceutical ingredients (APIs), agrochemicals, and other specialty chemicals where chirality is paramount for efficacy and safety.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of novel therapeutic agents, particularly for complex target molecules.
• Agrochemical Synthesis: Used in the production of advanced, stereoselective pesticides and herbicides where specific isomer activity is required.
• Asymmetric Catalysis Ligand Precursor: Serves as a starting material for synthesizing sophisticated chiral ligands used in asymmetric hydrogenation and other catalytic processes.
• Fine Chemical Building Block: Employed in academic and industrial research for the construction of natural product analogs and other complex organic architectures.
• Material Science Research: Investigated as a monomer or functional component in the development of novel polymers with specific optical or structural properties.

Basic Information

Item	Detail
Product Name	2H-Pyran-6-Carboxylicacid,2-Ethoxy-3,4-Dihydro-4-Methyl-,Ethylester,(2S,4S)-(9Ci)
CAS No.	700871-34-7
Molecular Formula	C11H18O4
Molecular Weight	214.26 g/mol
Synonyms	(2S,4S)-2-Ethoxy-4-methyl-3,4-dihydro-2H-pyran-6-carboxylic acid ethyl ester; Ethyl (2S,4S)-2-ethoxy-4-methyl-3,4-dihydro-2H-pyran-6-carboxylate; 2-Ethoxy-4-methyl-3,4-dihydro-2H-pyran-6-carboxylic Acid Ethyl Ester (2S,4S)-; (2S,4S)-Dihydro-2-ethoxy-4-methyl-2H-pyran-6-carboxylic acid ethyl ester; 700871-34-7; (2S-cis)-2-Ethoxy-4-methyl-3,4-dihydro-2H-pyran-6-carboxylic acid ethyl ester
EINECS	Contact for details

Quality Control

We supply this chiral intermediate under a rigorous quality management system. Each batch is characterized and tested to ensure identity, purity, and enantiomeric excess meet the stringent requirements of advanced synthesis. A comprehensive Certificate of Analysis (COA) is provided, detailing results from chiral HPLC, NMR, and other analytical techniques to confirm the (2S,4S) configuration and chemical purity. Our commitment to cGMP-compliant practices ensures traceability and reliability for critical R&D and scale-up projects.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). Keep away from strong acids and incompatible organic solvents. The container must be kept tightly sealed to prevent moisture absorption and potential degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 98.0%
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.