Description

Threo-Pentonic Acid, 2,3-Anhydro-4,5-Dideoxy-4-Methyl-, Ethyl Ester (9Ci) is a specialized anhydro sugar derivative with a CAS registry number of 136889-95-7, serving as a high-value chiral building block and synthetic intermediate in advanced organic synthesis. Its unique fused-ring structure and defined stereochemistry make it critical for constructing complex molecules with precise spatial orientation. This compound is primarily utilized by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and fine chemical sectors for developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the synthesis of nucleoside analogs, antiviral agents, and other bioactive molecules.
• Agrochemical Research: Building block for developing novel herbicides, fungicides, and plant growth regulators with specific stereochemical requirements.
• Fine Chemical Synthesis: Precursor for specialty chemicals, including chiral ligands, catalysts, and advanced polymer monomers.
• Academic & R&D: Used in methodological chemistry research for studying ring-opening reactions, stereoselective transformations, and carbohydrate chemistry.
• Glycomimetics Development: Core structure for creating sugar mimics that interact with biological receptors, useful in drug discovery.

Basic Information

Product Name	Threo-Pentonic Acid, 2,3-Anhydro-4,5-Dideoxy-4-Methyl-, Ethyl Ester (9Ci)
CAS No.	136889-95-7
Molecular Formula	C8H14O4
Molecular Weight	174.19 g/mol
Synonyms	Ethyl 2,3-anhydro-4,5-dideoxy-4-methyl-D-threo-pentonate; 4,5-Dideoxy-4-methyl-2,3-anhydro-D-threo-pentonic acid ethyl ester; D-threo-Pentonic acid, 2,3-anhydro-4,5-dideoxy-4-methyl-, ethyl ester; 2,3-Anhydro-4,5-dideoxy-4-methyl-D-threo-pentonic acid ethyl ester; Ethyl 4,5-dideoxy-4-methyl-2,3-anhydro-D-threo-pentonate; (2R,3S)-2,3-Anhydro-4,5-dideoxy-4-methylpentonic acid ethyl ester; Anhydro sugar derivative ethyl ester.
EINECS	Contact for details

Quality Control

We maintain stringent quality control protocols for our chiral intermediates. Production follows current Good Manufacturing Practices (cGMP) where applicable, and each batch is characterized using advanced analytical techniques including HPLC, GC, NMR, and optical rotation measurement to ensure identity, purity, and chiral integrity. Comprehensive Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong bases and incompatible organic solvents. For long-term storage, consider inert atmosphere conditions to maintain optimal stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Optical Rotation	Contact for details
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.