Octamethylcyclotetrasiloxane
TL;DR: Octamethylcyclotetrasiloxane (CAS 556-67-2) is a chemical compound with molecular formula C8H24O4Si4 and molecular weight 296.08 g/mol, supplied by Kehong Biological (Henan Kehong Biological Technology Co., Ltd.) with CRO/CDMO custom synthesis services.
2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
Also Known As: OCTAMETHYLCYCLOTETRASILOXANE, Cyclomethicone 4, OMCTS, Cyclotetrasiloxane, octamethyl-, Cyclotetrasiloxane
| Molecular Formula | C8H24O4Si4 |
|---|---|
| Molecular Weight | 296.08 g/mol |
| LogP | 2.87 |
| Topological Polar Surface Area | 36.9 Ų |
| Hydrogen Bond Donors | 0 |
| Hydrogen Bond Acceptors | 4 |
| Rotatable Bonds | 0 |
| Exact Mass | 296.07516 |
| Heavy Atoms | 16 |
| Complexity | 197.0 |
| Melting Point | 17.5 °C |
| Boiling Point | 175 °C |
| Density | Specific gravity: 0.9558 |
| Solubility | In water, 0.056 mg/L at 23 °C |
| Flash Point | 55 °C (55.0 °C) - closed cup |
| Vapor Pressure | 1.05 [mmHg] |
| Refractive Index | 1.3968 at 20 °C |
Chemical Identifiers
| CAS Number | 556-67-2 |
|---|---|
| SMILES | C[Si]1(O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)C |
| InChIKey | HMMGMWAXVFQUOA-UHFFFAOYSA-N |
Patent-Derived Application Labels
Derived from 22 IPC patent classification(s) across the SureChEMBL global patent database.
Product Overview
Octamethylcyclotetrasiloxane (CAS 556-67-2), with molecular formula C8H24O4Si4 and molecular weight 296.08 g/mol. IUPAC: 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane.
Chemical Property Profile of Octamethylcyclotetrasiloxane
Property Insights of Octamethylcyclotetrasiloxane
The XLogP value of 2.87 suggests moderate lipophilicity, balancing water solubility and membrane permeability for Octamethylcyclotetrasiloxane. With a topological polar surface area (TPSA) of 36.9 Ų, Octamethylcyclotetrasiloxane exhibits relatively low polarity, potentially indicating favorable cell membrane permeability. Following Lipinski's Rule of Five, Octamethylcyclotetrasiloxane has 0 hydrogen bond donor(s) and 4 hydrogen bond acceptor(s), all within the drug-like range, suggesting favorable oral bioavailability potential.
Frequently Asked Questions
Frequently Asked Questions
What is the CAS number of Octamethylcyclotetrasiloxane?
The CAS number of Octamethylcyclotetrasiloxane is 556-67-2.
What is the molecular formula of Octamethylcyclotetrasiloxane?
The molecular formula of Octamethylcyclotetrasiloxane is C8H24O4Si4.
What is the molecular weight of Octamethylcyclotetrasiloxane?
The molecular weight of Octamethylcyclotetrasiloxane is 296.08 g/mol.
Where can I buy Octamethylcyclotetrasiloxane?
You can request a quote for Octamethylcyclotetrasiloxane directly from KEHONG BIO. Contact us or email info@kehongbio.com for pricing and availability.
Does KEHONG BIO offer custom synthesis for Octamethylcyclotetrasiloxane?
Yes, KEHONG BIO provides custom synthesis services for Octamethylcyclotetrasiloxane and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.