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(S)-BNP Acid

(S)-BNP Acid

Chiral Catalysts, Ligands, Reagents, Privileged Ligands and Complexes, Asymmetric Synthesis, Chemical Synthesis, Chiral Resolving Agents, and Chiral Resolution Agents, and Chiral Phosphoric Acids


1) (S)-BNP Acid is used as a chiral acid catalyst in enantioselective Mannich type reactions

Ref: Org. Lett., 2012, 14, 2126.

2) (S)-BNP Acid is used in asymmetric hetero Diels-Alder reaction catalyzed by chiral lanthanide(III) complex. 

Ref:  Org. Lett., 2000, 2, 49.

3) (S)-BNP Acid is used as an acidic resolving agent for several organic bases and helicenes

Ref: J. Org. Chem., 1991, 56, 485;  US 6,162,919

4) (S)-BNP Acid is used as a NMR shift reagent for determining the enantiomeric purity of secondary and tertiary amines, and as a chiral ligand for homogeneous asymmetric catalysts


CAS Number
(S)-(+)-1,1′-Binaphthalene-2,2′-diyl hydrogen phosphate, (S)-4-Hydroxydinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-oxide; (S)-(+)-1,1′-Binaphthyl-2,2′-diyl hydrogenphosphate
Molecular Formula
MDL Number
Chemical Name
(S)-(+)-1,1'-Binaphthyl-2,2'-diyl hydrogenphosphate
Molecular Weight
Melting Point
300 °C
1 gm, 10 Gm & 50 gm in Glass Bottles, Bigger packaging available on request.

Price and Availability

QuantityAvailability*Price (INR)
1 gmIn StockOn Request
10 gmIn StockOn Request
50 gmIn StockOn Request
1 kg4-5 WeeksOn Request
25 kg8-10 Weeks (Negotiable)On Request

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(S)-BNP Acid | Synthesis with Catalysts


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