Description

Dipotassium (R)-1,1'-Binaphthyl-2,2'-Disulfonate is a high-purity chiral sulfonate salt, a key intermediate and resolving agent in asymmetric synthesis. Its primary value lies in its role as a versatile chiral auxiliary and counterion for phase-transfer catalysis, enabling the production of enantiomerically pure pharmaceuticals and fine chemicals. This compound is essential for R&D and production chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-quality chiral building blocks.

Application

• As a chiral resolving agent for the separation of racemic mixtures of amines, amino acids, and other basic compounds.
• Utilized as a chiral phase-transfer catalyst (PTC) in asymmetric alkylation and other carbon-carbon bond-forming reactions.
• Acts as a key chiral auxiliary or ligand precursor in the synthesis of enantiomerically pure active pharmaceutical ingredients (APIs).
• Employed in the development and manufacturing of agrochemicals requiring specific stereochemistry for enhanced activity.
• Used in academic and industrial research for methodological development in asymmetric synthesis.
• Serves as a chiral selector or additive in analytical methods such as chiral chromatography.

Basic Information

Item	Details
Product Name	Dipotassium (R)-1,1'-Binaphthyl-2,2'-Disulfonate
CAS No.	1092934-19-4
Molecular Formula	C20H12K2O6S2
Molecular Weight	514.73 g/mol
Synonyms	(R)-BINOL Disulfonate Dipotassium Salt; (R)-1,1'-Bi-2-naphthol-2,2'-disulfonic Acid Dipotassium Salt; (R)-2,2'-Dihydroxy-1,1'-binaphthyl-3,3'-disulfonic Acid Dipotassium Salt; (R)-BINSA Dipotassium Salt; (R)-BINOL-Disulfonate K Salt; (R)-3,3'-Disulfo-1,1'-bi-2-naphthol Dipotassium Salt; (R)-6,6'-Dihydroxy-5,5'-bibenzo[b]thiophene-2,2'-disulfonate Dipotassium Salt (alternative ring-system name)
EINECS	Contact for details

Quality Control

Our Dipotassium (R)-1,1'-Binaphthyl-2,2'-Disulfonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and chiral excess is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a desiccated environment to maintain stability and purity. Keep container tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Water Content (KF)	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	Reported on COA

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