Description

(R,R)-(+)-Hydrobenzoin 99+% is a high-purity chiral diol compound, specifically the (R,R)-enantiomer of 1,2-diphenyl-1,2-ethanediol. This compound matters as a versatile and highly valuable chiral building block and resolving agent in asymmetric synthesis, offering critical stereochemical control. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require enantiomerically pure intermediates for the development of active ingredients and advanced materials.

Application

• Chiral Ligand & Catalyst Synthesis: Serves as a precursor for the preparation of chiral ligands used in asymmetric catalysis, such as in hydrogenation and epoxidation reactions.
• Pharmaceutical Intermediates: A key starting material in the synthesis of enantiomerically pure active pharmaceutical ingredients (APIs) and complex natural products.
• Chiral Resolution Agent: Used for the classical resolution of racemic mixtures of acids, alcohols, and other compounds via diastereomeric salt or derivative formation.
• Asymmetric Synthesis Building Block: Employed in the construction of complex molecular architectures requiring defined stereocenters for agrochemicals and fine chemicals.
• Polymer Science: Can be utilized in the synthesis of chiral polymers and materials with specific optical properties.
• Academic & Industrial R&D: A fundamental reagent for method development and research in organic chemistry and stereochemistry.

Basic Information

Product Name	(R,R)-(+)-Hydrobenzoin 99+%
CAS No.	56165-22-1
Molecular Formula	C14H14O2
Molecular Weight	214.26 g/mol
Synonyms	(R,R)-(+)-1,2-Diphenyl-1,2-ethanediol; (R,R)-(+)-1,2-Dihydroxy-1,2-diphenylethane; (R,R)-(+)-Stilbenediol; D-(+)-Hydrobenzoin; (R,R)-Hydrobenzoin; (2R,3R)-2,3-Diphenylbutane-2,3-diol; (R,R)-Diphenylethylene glycol; (R,R)-Diphenylglycol
EINECS	Contact for details

Quality Control

Our (R,R)-(+)-Hydrobenzoin 99+% is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity assessment by HPLC, to ensure it meets the high standards required for research and production. Certificates of Analysis (COA) detailing specific purity, enantiomeric excess (ee), and impurity profiles are provided with every shipment.

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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Enantiomeric Excess (HPLC)	≥ 99.0% ee
Melting Point	148 - 152 °C
Specific Rotation ([α]D20)	+95° to +105° (c=1 in ethanol)
Loss on Drying	≤ 0.5%

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