Research chemical
CAS Number: 38421-40-8
Product details
For laboratory research and professional procurement workflows.
PubChem CID
38026
Exact Mass
682.221101
InChIKey
XQVNZAVBAUQQHU-UHFFFAOYSA-N
IUPAC Name
methyl-[methyl(diphenyl)silyl]oxy-[methyl-[methyl(diphenyl)silyl]oxy-phenylsilyl]oxy-phenylsilane
SMILES String
C[Si](C1=CC=CC=C1)(C2=CC=CC=C2)O[Si](C)(C3=CC=CC=C3)O[Si](C)(C4=CC=CC=C4)O[Si](C)(C5=CC=CC=C5)C6=CC=CC=C6
No physical property values available.
Catalog navigation
Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.
Tetramethyl hexaphenyl tetrasiloxane is identified by CAS 38421-40-8, with molecular formula C40H42O3Si4, molecular weight 683.1, InChIKey XQVNZAVBAUQQHU-UHFFFAOYSA-N.
Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.
Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.
Availability, pack size, lead time, and pricing are confirmed through RFQ.
Submit the CAS number, quantity, purity requirement, and destination country for sourcing review.
Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.
Heavy atom count
47
H-bond acceptors
3
H-bond donors
0
Rotatable bonds
12
Ring count
6
Aromatic rings
6
Topological polar surface area
27.69 Ų
Computed LogP
5.77
Fragment-like structure rule
No
Lead-like structure rule
No
Drug-like structure rule
No
Structure family
other structure rule
Precious metal motif
No
Transition metal motif
No
Phosphine ligand motif
No
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.
Structural features
Tetramethyl hexaphenyl tetrasiloxane (CAS 38421-40-8) is maintained as a commercial cas reference with formula C40H42O3Si4, molecular weight 683. 10 g/mol, PubChem CID 38026.
Sourcing context
Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.
Research use context
Use this page for CAS identity lookup, internal catalog search, and commercial discovery workflows.
Documentation needs
Review supplier documentation before handling; for research use only.
Safety and handling reference content is available through documentation requests.
For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.