Description

(-)-5,6-o-Cyclohexylidene-D-Isoascorbic Acid is a specialized, high-purity derivative of isoascorbic acid, characterized by its specific stereochemistry and protective cyclohexylidene group. This compound is valued for its role as a key chiral intermediate and antioxidant in advanced synthetic chemistry and pharmaceutical development. It is primarily required by research institutions and industrial manufacturers in the pharmaceutical, fine chemical, and nutraceutical sectors for producing enantiomerically pure compounds and stabilizing sensitive formulations.

Application

• Pharmaceutical Intermediate: A crucial chiral building block for the synthesis of active pharmaceutical ingredients (APIs) and complex organic molecules.
• Asymmetric Synthesis: Used as a ligand or auxiliary in catalytic asymmetric reactions to induce stereoselectivity.
• Antioxidant Research: Serves as a model compound or a specialized antioxidant in biochemical and food science research studies.
• Fine Chemical Production: Employed in the multi-step synthesis of specialty chemicals, flavors, and fragrances requiring high stereochemical purity.
• Reference Standard: Utilized as an analytical standard in quality control laboratories for HPLC or spectroscopic method development and validation.

Basic Information

Product Name	(-)-5,6-o-Cyclohexylidene-D-Isoascorbic Acid
CAS No.	97627-84-4
Molecular Formula	C₁₂H₁₈O₆
Molecular Weight	258.27 g/mol
Synonyms	D-(-)-5,6-Isopropylidene Ascorbic Acid; 5,6-O-Cyclohexylidene-L-ascorbic Acid (enantiomer); D-Isoascorbic Acid 5,6-Cyclohexylidene Ketal; (-)-Cyclohexylidene D-erythro-Hex-2-enonic Acid γ-Lactone; D-Araboascorbic Acid 5,6-O-Cyclohexylidene Derivative
EINECS	Contact for details

Quality Control

Our (-)-5,6-o-Cyclohexylidene-D-Isoascorbic Acid is manufactured under strict quality management systems. Each batch is subjected to comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to guarantee traceability and compliance.

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). This compound is moisture-sensitive; keep the container tightly sealed in a dry environment to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.