Chloroheptamethylcyclotetrasiloxane CAS 18297-88-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 18297-88-6 |
| Molecular Formula | C7H21ClO4Si4 |
| Molecular Weight | 317.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Chloroheptamethylcyclotetrasiloxane (CAS 18297-88-6) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C7H21ClO4Si4. Molecular weight: 317.03 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C7H21ClO4Si4 |
| Molecular Weight | 317.03 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | -3.0 |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
Recommended Standards
- 5-bromo-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (CAS 1352819-26-1)
- 6-Bromo-2-fluoro-3-methoxy-4-(trifluoromethyl)benzoic acid (CAS 2451907-24-5)
- 4,7-Dibromo-2,3,3-trimethyl-3H-indole (CAS 928333-79-3)
- 4-tert-butyl-1H-pyrrole-2-carbaldehyde (CAS 156245-57-7)
- α,β-Thujone (CAS 76231-76-0)
- Ethyl 3-(3-ethoxyphenyl)acrylate (CAS 57293-23-9)
- 4,4'-(2-Phenylpyrimidine-4,6-diyl)dianiline (CAS 68820-65-5)
- 1-(2,4-Dimethylquinolin-3-yl)ethanone (CAS 943825-10-3)
- 3-Fluoro-5-methoxy-2-nitroaniline (CAS 2091140-87-1)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
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