Description

2(3H)-Furanone, 4-Ethynyldihydro-3,5-Dimethyl-, (3S,4S,5R)- (9Ci) is a high-value, stereochemically defined furanone derivative, serving as a critical chiral building block in advanced organic synthesis. Its unique structure, featuring an ethynyl group and specific stereochemistry, makes it indispensable for constructing complex molecular architectures with precise three-dimensional control. This compound is primarily sought after by research and development teams in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of new drug candidates, particularly in areas requiring complex heterocyclic scaffolds.
• Agrochemical Synthesis: Used in the creation of advanced, stereoselective pesticides and herbicides where specific chirality impacts biological activity.
• Material Science Research: Acts as a precursor for novel polymers or functional materials with tailored optical or electronic properties.
• Academic & Industrial R&D: Employed in methodological chemistry research for developing new asymmetric synthesis routes and catalytic processes.
• Fine Chemical Production: Serves as a building block for synthesizing specialty flavors, fragrances, and other high-value fine chemicals.

Basic Information

Product Name	2(3H)-Furanone, 4-Ethynyldihydro-3,5-Dimethyl-, (3S,4S,5R)- (9Ci)
CAS No.	405552-27-4
Molecular Formula	C8H10O2
Molecular Weight	138.16 g/mol
Synonyms	(3S,4S,5R)-4-Ethynyl-3,5-dimethyl-dihydrofuran-2(3H)-one; 4-Ethynyl-3,5-dimethyl-dihydro-2(3H)-furanone, (3S,4S,5R)-; (3S,4S,5R)-4-Ethynyl-3,5-dimethyltetrahydrofuran-2-one; 4-Ethynyldihydro-3,5-dimethyl-2(3H)-furanone, (3S,4S,5R)-; Chiral 4-ethynyl furanone; Stereoisomer of CAS 405552-27-4
EINECS	Contact for details

Quality Control

Our production of 2(3H)-Furanone, 4-Ethynyldihydro-3,5-Dimethyl-, (3S,4S,5R)- (9Ci) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chiral purity analysis (HPLC), identity confirmation (IR, NMR), and impurity profiling. A detailed Certificate of Analysis (COA) documenting all specifications is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
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.