5-(Di-tert-butylphosphino)-1-(naphthalen-1-yl)-1H-pyrazole
5-(Di-tert-butylphosphino)-1-(naphthalen-1-yl)-1H-pyrazole (CAS: 894085-97-3; Formula: C21H27N2P) is a phosphine ligand with a molecular weight of 338.43 g/mol. This compound is primarily utilised as a catalyst in amination reactions, offering efficient chemical synthesis pathways. Its specific structure makes it a valuable reagent in advanced organic chemistry and catalysis research. Tech Serve Solutions supplies this high-purity chemical for laboratory and industrial applications.
- IUPAC
- 5-[Bis(1,1-dimethylethyl)phosphino]-1-(1-naphthalenyl)-1H-pyrazole
- Synonyms
- 5-[Bis(1,1-dimethylethyl)phosphino]-1-(1-naphthalenyl)-1H-pyrazole

Catalysis in Amination Reactions
This phosphine compound serves as an effective catalyst for amination reactions, facilitating the formation of carbon-nitrogen bonds. Its application is crucial in the synthesis of complex organic molecules and pharmaceutical intermediates.
Chemical Synthesis Reagent
As a specialised phosphine ligand, it is employed in various organic synthesis procedures. It enables sophisticated chemical transformations, contributing to advancements in materials science and drug discovery.
Research and Development
Utilised in academic and industrial research settings to explore new catalytic systems and synthetic methodologies. Its unique structural features allow for fine-tuning of reaction selectivity and efficiency.
| Molecular weight | 338.43 |
|---|---|
| Empirical formula | C21H27N2P |
| Assay | 97% |
| Application | Catalyst for amination reactions1 |
| Melting point | 127-131 °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
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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 5-(Di-tert-butylphosphino)-1-(naphthalen-1-yl)-1H-pyrazole used for?
+
This compound is primarily used as a catalyst for amination reactions and as a reagent in chemical synthesis.
What is the CAS number and chemical formula for this product?
+
The CAS number is 894085-97-3 and the chemical formula is C21H27N2P.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this product at a purity of 97%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 5-(Di-tert-butylphosphino)-1-(naphthalen-1-yl)-1H-pyrazole be handled safely?
+
This compound may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Wear protective gloves, eye protection, and ensure adequate ventilation. In case of eye contact, rinse cautiously with water for several minutes and seek medical advice.
Is this product available for international export?
+
Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, pharmaceutical intermediates, and laboratory reagents.
How can I request a sample or quote?
+
Please contact our sales team via the website or by phone to request a sample or a quotation for this product.
▶ Related products

Benzeneruthenium(II) chloride dimer
Ru2(C6H6)2Cl4
Catalysis & Inorganic
Benzoylferrocene
C17H14FeO
Catalysis & Inorganic
Benzyldiphenylphosphine
C6H5CH2P(C6H5)2
Catalysis & Inorganic
Beryllium
Be
Catalysis & Inorganic
Beryllium oxide
BeO
Catalysis & Inorganic![Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer — chemical structure, CAS 12257-42-0; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F12257-42-0.png&w=3840&q=75)
Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer
Catalysis & Inorganic
![Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo — chemical structure, CAS 1228149-03-8; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1228149-03-8.png&w=3840&q=75)
Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo
1-d:1′
Catalysis & Inorganic![Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride (C16H20ClN3Ni) — chemical structure, CAS 1033772-47-2; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1033772-47-2.png&w=3840&q=75)
Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride
C16H20ClN3Ni
Catalysis & Inorganic▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis