(R)-(−)-1,1′-Binaphthalene-2,2′-diyl hydrogen phosphate
(R)-(−)-1,1′-Binaphthalene-2,2′-diyl hydrogen phosphate (CAS: 39648-67-4) is a chiral phosphoric acid with a molecular weight of 348.29 g/mol. This compound is a valuable tool in asymmetric synthesis, acting as a chiral catalyst and resolving agent. Its specific stereochemistry enables enantioselective transformations, making it crucial for producing stereochemically pure compounds in research and development.
- Synonyms
- 39648-67-4C20H13O4P

Chiral Catalyst in Asymmetric Synthesis
This phosphoric acid derivative serves as an effective chiral Brønsted acid catalyst, promoting enantioselective reactions such as additions and cycloadditions. Its unique BINAP backbone provides a well-defined chiral environment essential for high stereoselectivity.
Chiral Resolving Agent
Utilised for the resolution of racemic mixtures, it can selectively interact with one enantiomer, facilitating its separation from the other. This application is vital in obtaining enantiomerically pure compounds for pharmaceutical and fine chemical industries.
Ligand in Organometallic Chemistry
While primarily known as an acid catalyst, related binaphthyl phosphoric acids can also function as chiral ligands in transition metal catalysis, influencing the stereochemical outcome of metal-mediated reactions.
| Molecular weight | 348.29 |
|---|---|
| Empirical formula | C20H13O4P |
| Assay | ≥98.0% (T) |
| Grade | purum |
| Optical activity | [α]20/D −600±15°, c = 1% in methanol |
| Melting point | ≥300 °C |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is (R)-(−)-1,1′-Binaphthalene-2,2′-diyl hydrogen phosphate used for?
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(R)-(−)-1,1′-Binaphthalene-2,2′-diyl hydrogen phosphate is primarily used as a chiral catalyst in asymmetric synthesis and as a chiral resolving agent for separating enantiomers.
What are the CAS number and formula for this compound?
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The CAS number is 39648-67-4, and the empirical formula is C20H13O4P.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound at a 'purum' grade with an assay of ≥98.0% (T). We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling this chemical?
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This compound is classified with GHS07 and carries a Warning signal word. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including dust masks (type N95), eyeshields, and gloves, must be used. Ensure adequate ventilation.
How is this chemical typically packed and shipped?
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This chemical is carefully packed to ensure stability and safety during transit. As a global supplier, Tech Serve Solutions exports this product worldwide, adhering to all relevant shipping regulations.
How can I request a sample or quote for this product?
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To request a sample or a quote, please use the contact form on our website or reach out to our sales team directly with your specific requirements.
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