Description

Dimethyl 2,3-o-Benzylidene-D-Tartrate, 99 is a high-purity chiral auxiliary and synthetic intermediate derived from D-tartaric acid. This compound is critically important for its role in asymmetric synthesis, where it is used to induce stereoselectivity in the formation of new chiral centers. It is primarily needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for the production of enantiomerically pure active ingredients and advanced intermediates.

Application

• Chiral Auxiliary in Asymmetric Synthesis: Employed to control the stereochemical outcome of reactions such as aldol condensations, alkylations, and Diels-Alder reactions.
• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of enantiopure drugs, including potential antivirals, antibiotics, and cardiovascular agents.
• Ligand Precursor: Used in the preparation of chiral ligands for asymmetric catalysis, including those for hydrogenation and oxidation reactions.
• Fine Chemical Synthesis: Integral to the manufacture of specialty chemicals, flavors, and fragrances requiring high optical purity.
• Academic and Industrial R&D: A valuable tool for methodological development and exploring new synthetic pathways in organic chemistry laboratories.

Basic Information

Product Name	Dimethyl 2,3-o-Benzylidene-D-Tartrate, 99
CAS No.	38270-70-1
Molecular Formula	C₁₃H₁₄O₆
Molecular Weight	266.25 g/mol
Synonyms	D-(-)-Dimethyl 2,3-O-Benzylidenetartrate; (2R,3R)-Dimethyl 2,3-O-(Phenylmethylene) Tartrate; Benzylidene-D-tartaric Acid Dimethyl Ester; (2R,3R)-2,3-Bis(methoxycarbonyl)-1,4-dioxaspiro[4.5]dec-6-ene; Dimethyl (4R,5R)-2-phenyl-1,3-dioxolane-4,5-dicarboxylate
EINECS	Contact for details

Quality Control

Every batch of Dimethyl 2,3-o-Benzylidene-D-Tartrate is produced and tested under a strict quality management system to ensure consistency and reliability for your critical syntheses. Our products undergo rigorous quality testing, including chiral purity analysis, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and specific rotation are available upon request.

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 heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Specific Rotation [α]²⁰D	Contact for details
Melting Point	Contact for details
Heavy Metals	< 10 ppm
Residue on Ignition	< 0.1%

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