Research chemical
CAS Number: 857356-94-6
![Di-tert-butyl(2',4',6'-triisopropyl-3,4,5,6-tetramethyl-[1,1'-biphenyl]-2-yl)phosphine , Me4-tBu-Xphos molecular structure, CAS 857356-94-6](/structure-images/857356-94-6.png?v=struct-v2)
Product details
For laboratory research and professional procurement workflows.
PubChem CID
11953610
Exact Mass
480.38848
InChIKey
RCRYEYMHBHPZQD-UHFFFAOYSA-N
IUPAC Name
ditert-butyl-[2,3,4,5-tetramethyl-6-[2,4,6-tri(propan-2-yl)phenyl]phenyl]phosphane
SMILES String
CC(C)C1=CC(C(C)C)=C(C(=C1)C(C)C)C1=C(C)C(C)=C(C)C(C)=C1P(C(C)(C)C)C(C)(C)C
No physical property values available.
Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.
Heavy atom count
34
H-bond acceptors
0
H-bond donors
0
Rotatable bonds
5
Ring count
2
Aromatic rings
2
Topological polar surface area
0 Ų
Computed LogP
10.66
Structural features
Di-tert-butyl(2',4',6'-triisopropyl-3,4,5,6-tetramethyl-[1,1'-biphenyl]-2-yl)phosphine, Me4-tBu-Xphos (CAS 857356-94-6) is a research-use catalog compound with formula C33H53P, molecular weight 480. 75 g/mol, cataloged for catalysis and ligand research.
Sourcing context
Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.
Research use context
Use this record to verify identity and review the listed 0. 05 g, 95%, USD 19. Submit an RFQ to confirm current stock, lead time, shipment fit, and final quotation.
Documentation needs
Recorded public safety signal word: Warning. Recorded hazard codes: H315, H319, H335. Request and review the current supplier SDS and COA before purchase, handling, or shipment.
Safety and handling reference content is available through documentation requests.
For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.
Preliminary Safety Reference
For supplier-issued SDS or COA, submit a documentation request.
Safety Reference / SDS RequestCatalog navigation
Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.
Procurement notes
MolGraph uses public price and availability evidence as a starting point, then confirms current stock, quotation, COA/SDS, lot specification, lead time, and shipment documentation before final acceptance.
Use the quote panel for visible public options. Additional quantities or specifications can be reviewed by RFQ.
Purity, lot identity, and batch-specific documentation are confirmed before procurement decisions.
Supplier-issued COA and SDS can be requested before handling, storage, shipment, or procurement decisions.
Final quote depends on quantity, lead time, destination, and supplier confirmation.
Di-tert-butyl(2',4',6'-triisopropyl-3,4,5,6-tetramethyl-[1,1'-biphenyl]-2-yl)phosphine , Me4-tBu-Xphos is listed as in-stock / available for research-use sourcing review. Final availability, lot specification, and lead time are confirmed by RFQ.
The page shows a public reference price in the quote panel. Submit an RFQ to confirm current price, quantity breaks, lead time, and destination-specific shipping requirements.
Yes. Supplier-issued COA and SDS can be requested during the RFQ workflow. Lot-specific documents depend on supplier and batch confirmation.
Fragment-like structure rule
No
Lead-like structure rule
No
Drug-like structure rule
No
Structure family
phosphine ligand
Precious metal motif
No
Transition metal motif
No
Phosphine ligand motif
Yes
N-heterocycle motif
No
Boronic acid motif
No
Computed structure descriptors generated from molecular structure. These are not experimental physical property values, supplier specifications, SDS data, or bioactivity claims.
Shipment review: Required
Certificate of Analysis (COA): By request
Supplier Safety Data Sheet (SDS): By request
Purity and pack size confirmation: By request
Availability and lead time review: Confirmed by RFQ
Shipment documentation review: By request
For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference
Additional text reference cues are not available for this catalog entry.
Non-public references are shown as text only and do not imply equivalence, availability, or shared use.