C5KT601WPM 33204-76-1 Quadrosilan [INN:BAN] Cyclotetrasiloxane, 2,6-diphenylhexamethyl-, Z- Cyclotetrasiloxane, 2,2,4,6,6,8-hexamethyl-4,8-diphenyl-, cis- cis-2,2,4,6,6,8-Hexamethyl-4,8-diphenylcyclotetrasiloxane Quadrosilan Cisobitan Cyclic 2,6-cis-diphenylhexamethylcyclotetrasiloxane Cyclotetrasiloxane, 2,6-diphenyl-2,4,4,6,8,8-hexamethyl-, (Z)- 2,6-cis-Diphenylhexamethylcyclotetrasiloxane cis-2,6-Diphenyl-2,4,4,6,8,8-hexamethylcyclotetrasiloxane EINECS 251-406-1 KABI 1774 Quadrosilane [INN-French] Quadrosilanum [INN-Latin] Quadrosilane Quadrosilanum UNII-C5KT601WPM CAS 33204-76-1
| CAS No. | 33204-76-1 |
| Molecular Formula | C18H28O4Si4 |
| Molecular Weight | 420.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order C5KT601WPM 33204-76-1 Quadrosilan [INN:BAN] Cyclotetrasiloxane, 2,6-diphenylhexamethyl-, Z- Cyclotetrasiloxane, 2,2,4,6,6,8-hexamethyl-4,8-diphenyl-, cis- cis-2,2,4,6,6,8-Hexamethyl-4,8-diphenylcyclotetrasiloxane Quadrosilan Cisobitan Cyclic 2,6-cis-diphenylhexamethylcyclotetrasiloxane Cyclotetrasiloxane, 2,6-diphenyl-2,4,4,6,8,8-hexamethyl-, (Z)- 2,6-cis-Diphenylhexamethylcyclotetrasiloxane cis-2,6-Diphenyl-2,4,4,6,8,8-hexamethylcyclotetrasiloxane EINECS 251-406-1 KABI 1774 Quadrosilane [INN-French] Quadrosilanum [INN-Latin] Quadrosilane Quadrosilanum UNII-C5KT601WPM (CAS 33204-76-1) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C18H28O4Si4. Molecular weight: 420.75 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C18H28O4Si4 |
| Molecular Weight | 420.75 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Recommended Standards
- 2,2,4,4,6,6-Hexamethyl-8,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane (CAS 1693-44-3)
- 4,4′-Dinonyl-2,2′-bipyridine (CAS 142646-58-0)
- Sitstanol-5,6,22,23-d<SUB>4</SUB> (CAS 150044-25-0)
- 5-Hydroxybenzofuran-2-carboxylic Acid (CAS 56172-36-2)
- 4-Bromo-2-(1,1,1,3,3,3-hexafluoropropan-2-yloxy)benzaldehyde 1707604-69-0 (CAS 1707604-69-0)
- 3-Chloro-4-(trifluoromethoxy)benzoyl chloride (CAS 261763-17-1)
- Fentin-Hydroxide (CAS 76-87-9)
- (4-(3-Bromopropoxy)phenyl)methanol (CAS 214614-64-9)
- 6-Methoxybenzofuran-3-carbaldehyde (CAS 896722-58-0)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com