Description

(-)-Diacetyl-L-Tartaric Acid is a high-purity chiral organic acid derivative, widely recognized for its role as a resolving agent and chiral auxiliary in asymmetric synthesis. Its value lies in its ability to induce optical purity in the production of enantiomerically pure pharmaceuticals and fine chemicals. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require precise stereochemical control in their synthetic processes.

Application

• Chiral Resolution Agent: Used for the separation of racemic mixtures of amines, amino acids, and other basic compounds.
• Pharmaceutical Intermediate: Serves as a key building block and chiral auxiliary in the synthesis of active pharmaceutical ingredients (APIs).
• Asymmetric Catalyst Precursor: Employed in the preparation of catalysts for enantioselective reactions.
• Food Additive Intermediate: Used in the production of certain emulsifiers and food-grade additives.
• Analytical Chemistry: Functions as a chiral selector in chromatography for analytical method development.
• Fine Chemical Synthesis: Applied in the manufacture of specialty chemicals requiring specific stereochemistry.

Basic Information

Product Name	(-)-Diacetyl-L-Tartaric Acid
CAS No.	51591-38-9
Molecular Formula	C8H10O8
Molecular Weight	234.16 g/mol
Synonyms	(-)-L-Diacetyltartaric Acid; (2R,3R)-2,3-Diacetoxybutanedioic Acid; DAT; L(-)-Diacetyl Tartaric Acid; (2R,3R)-2,3-Diacetoxysuccinic Acid; Anhydrous L-Diacetyltartaric Acid; (R,R)-(-)-Diacetyl Tartaric Acid; EINECS 257-251-8
EINECS	257-251-8

Quality Control

Our (-)-Diacetyl-L-Tartaric Acid is manufactured under a strict quality management system to ensure batch-to-batch consistency and high chemical purity. We provide comprehensive quality documentation, including Certificates of Analysis (COA) that detail purity, chiral purity, and impurity profiles. The product is suitable for applications requiring compliance with cGMP and ICH guidelines.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be kept under dry conditions 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
Specific Rotation [α]20/D	-120° to -130° (c=1 in H2O)
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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