Description

Ethyl Hydrogen [R-(R*,R*)]-Tartrate is a high-purity chiral derivative of tartaric acid, specifically the ethyl ester of the (R,R)-enantiomer. This compound is a critical chiral building block and resolving agent in asymmetric synthesis, valued for its ability to impart optical purity to target molecules. It is essential for manufacturers in the pharmaceutical, agrochemical, and fine chemical industries who require enantiomerically pure intermediates for the production of active ingredients and specialty chemicals.

Application

• Chiral Resolution Agent: Used for the separation of racemic mixtures of amines, amino acids, and other basic pharmaceuticals.
• Asymmetric Synthesis Intermediate: Serves as a key starting material or auxiliary in the synthesis of enantiomerically pure drugs and agrochemicals.
• Pharmaceutical Manufacturing: Employed in the production of chiral active pharmaceutical ingredients (APIs) for various therapeutic areas.
• Catalyst and Ligand Preparation: Used to synthesize chiral ligands for metal-catalyzed asymmetric reactions.
• Fine Chemical Synthesis: A versatile intermediate for creating complex, optically active molecules in research and development.
• Analytical Chemistry Standard: Acts as a reference standard for chromatographic methods in quality control laboratories.

Basic Information

Item	Detail
Product Name	Ethyl Hydrogen [R-(R*,R*)]-Tartrate
CAS No.	608-89-9
Molecular Formula	C6H10O6
Molecular Weight	178.14 g/mol
Synonyms	(R,R)-(-)-Ethyl Hydrogen Tartrate; (-)-Ethyl Hydrogen D-Tartrate; Ethyl (2R,3R)-2,3-Dihydroxybutanedioate Hydrogen Salt; D-(-)-Ethyl Hydrogen Tartrate; (2R,3R)-(-)-Ethyl Hydrogen Tartrate; Ethyl Hydrogen D-(-)-Tartrate; Ethyl Bitartrate (enantiomer)
EINECS	210-163-7

Quality Control

Our Ethyl Hydrogen [R-(R*,R*)]-Tartrate is manufactured under a strict quality management system. Each batch is tested to ensure high chemical and optical purity, meeting the stringent requirements for chiral intermediates. A comprehensive Certificate of Analysis (COA) detailing assay, enantiomeric excess, and impurity profiles is provided with every shipment to guarantee supply reliability and batch-to-batch consistency for your critical processes.

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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Excess (HPLC)	≥ 99.0%
Specific Rotation	-9.0° to -11.0° (c=1 in H2O)
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.