Tetramethyl tBuXPhos
Tetramethyl tBuXPhos (CAS 857356-94-6), molecular formula C33H53P, is a high-purity chemical supplied by Tech Serve Solutions for catalysis & inorganic applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- 2-Di-tert-butylphosphino-3,4,5,6-tetramethyl-2′,4′,6′-triisopropyl-1,1′-biphenyl,Me4-t-ButylXphos,Tetramethyl di-tBuXPhos

| Molecular weight | 480.75 |
|---|---|
| Empirical formula | C33H53P |
| Assay | 96% |
| Application | Ligand used in a palladium-catalyzed amidation of aryl chlorides.1 |
| Melting point | 168-172 °C |
| Ligand For | Buchwald-Hartwig Cross Coupling ReactionC-X Bond Formation |
|---|
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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 Tetramethyl tBuXPhos?
+
Tetramethyl tBuXPhos (CAS 857356-94-6), molecular formula C33H53P, is a high-purity chemical supplied by Tech Serve Solutions for catalysis & inorganic applications, to USP, BP and EP standards.
What grades of Tetramethyl tBuXPhos does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Tetramethyl tBuXPhos in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Tetramethyl tBuXPhos?
+
Tetramethyl tBuXPhos has CAS number 857356-94-6 and molecular formula C33H53P. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Tetramethyl tBuXPhos?
+
Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
+
Yes. Every batch of Tetramethyl tBuXPhos ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Tetramethyl tBuXPhos be stored?
+
Store Tetramethyl tBuXPhos in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Tetramethyl tBuXPhos used for?
+
Tetramethyl tBuXPhos is used in catalysis & inorganic applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Tetramethyl tBuXPhos?
+
Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
▶ 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](/_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](/_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](/_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


