Description

(5E,6S)-4β-(2-Methoxy-2-Oxoethyl)-5-(2-Hydroxyethylidene)-6α-(β-D-Glucopyranosyloxy)-5,6-Dihydro-4H-Pyran-3-Carboxylic Acid Methyl Ester CAS NO 91679-27-5 is a complex, high-purity chemical intermediate characterized by its unique pyran ring structure conjugated with a glucopyranosyl moiety. This compound matters for its role as a key synthetic precursor in the development of advanced pharmaceutical agents and specialized fine chemicals. It is primarily needed by research institutions and manufacturers in the pharmaceutical, biotechnology, and agrochemical sectors for synthesizing novel active ingredients and complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a critical building block in the synthesis of novel drug candidates, particularly in oncology and metabolic disease research.
• Glycoscience Research: Used as a substrate or intermediate in enzymatic studies and the synthesis of complex glycosides and glycoconjugates.
• Fine Chemical Synthesis: Employed in the production of high-value specialty chemicals requiring specific stereochemistry and functional groups.
• Biochemical Tool Compound: Utilized in academic and industrial R&D to study biological pathways and enzyme mechanisms.
• Agrochemical Development: Acts as a precursor in the design and synthesis of new-generation, biologically active compounds for crop protection.
• Reference Standard: Supplied as a high-purity analytical standard for quality control and method development in analytical laboratories.

Basic Information

Product Name	(5E,6S)-4β-(2-Methoxy-2-Oxoethyl)-5-(2-Hydroxyethylidene)-6α-(β-D-Glucopyranosyloxy)-5,6-Dihydro-4H-Pyran-3-Carboxylic Acid Methyl Ester
CAS No.	91679-27-5
Molecular Formula	C₁₈H₂₆O₁₂
Molecular Weight	434.39 g/mol
Synonyms	Methyl (5E,6S)-4β-(2-methoxy-2-oxoethyl)-5-(2-hydroxyethylidene)-6α-(β-D-glucopyranosyloxy)-5,6-dihydro-4H-pyran-3-carboxylate; 4H-Pyran-3-carboxylic acid, 4-(2-methoxy-2-oxoethyl)-5-(2-hydroxyethylidene)-6-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-5,6-dihydro-, methyl ester, (5E,6S)-; CAS 91679-27-5; Glucosylated Pyran Ester Derivative; Pyran-Glucoside Conjugate Intermediate
EINECS	Contact for details

Quality Control

Our production of (5E,6S)-4β-(2-Methoxy-2-Oxoethyl)-5-(2-Hydroxyethylidene)-6α-(β-D-Glucopyranosyloxy)-5,6-Dihydro-4H-Pyran-3-Carboxylic Acid Methyl Ester adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral analysis, and spectroscopic identification (NMR, IR, MS), to ensure it meets precise customer specifications. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with research and cGMP-grade requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). This compound is moisture-sensitive (hygroscopic) and should be handled under an inert atmosphere when appropriate to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Chiral Purity	≥ 98.0% ee
Water Content (KF)	≤ 2.0%
Residual Solvents (GC)	Meets ICH guidelines

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