Description

2,3-o-Isopropylidene-L-Gulonolactone is a protected lactone derivative of L-gulonic acid, serving as a crucial chiral intermediate in organic synthesis. Its primary value lies in its role as a versatile building block for the production of high-value compounds, particularly L-ascorbic acid (Vitamin C) and its analogs. This compound is essential for manufacturers in the pharmaceutical, nutraceutical, and fine chemical industries who require high-purity, reliable intermediates for complex synthetic pathways.

Application

• Key Intermediate for Vitamin C Synthesis: A critical precursor in the industrial and laboratory-scale synthesis of L-ascorbic acid.
• Chiral Building Block: Used in the asymmetric synthesis of complex molecules for pharmaceutical active ingredients (APIs).
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, flavors, and fragrances requiring specific stereochemistry.
• Nutritional Supplement Research: Serves as a starting material in the research and development of novel vitamin derivatives and nutritional compounds.
• Academic & R&D Laboratories: Utilized in chemical research for studying carbohydrate chemistry and developing new synthetic methodologies.

Basic Information

Product Name	2,3-o-Isopropylidene-L-Gulonolactone
CAS No.	94840-08-1
Molecular Formula	C₉H₁₄O₆
Molecular Weight	218.20 g/mol
Synonyms	2,3-O-Isopropylidene-L-gulonolactone; 2,3-O-Isopropylidene-L-gulono-1,4-lactone; L-Gulonolactone, 2,3-O-(1-methylethylidene)-; Isopropylidene-L-gulonolactone; 1,4-Lactone of 2,3-O-isopropylidene-L-gulonic acid; (3R,4S,5R)-3,4-Dihydroxy-5-((R)-1,2-dihydroxyethyl)dihydrofuran-2(3H)-one 3,4-acetonide
EINECS	Contact for details

Quality Control

Our 2,3-o-Isopropylidene-L-Gulonolactone is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for pharmaceutical and fine chemical applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is 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 controlled room temperature (15-25°C). Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Specific Rotation	Contact for details
Loss on Drying	≤ 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.