Heptamethylcyclotetrasiloxan-2-ol CAS 5290-02-8
Purity >95%In StockPharmaceutical Standards
| CAS No. | 5290-02-8 |
| Molecular Formula | C7H22O5Si4 |
| Molecular Weight | 298.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Heptamethylcyclotetrasiloxan-2-ol (CAS 5290-02-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C7H22O5Si4. Molecular weight: 298.59 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C7H22O5Si4 |
| Molecular Weight | 298.59 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | -3.0 |
| CAS Registry Year (est.) | 1958 |
Recommended Standards
- 2-(Difluoromethyl)-3,4,5,6-tetrafluorobenzenesulfonyl chloride (CAS 2773501-98-5)
- 2,2,2-Trifluoroethyl n-(2-chloro-4-nitrophenyl)carbamate (CAS 1235439-39-0)
- 6-Bromo-1-chloro[1]benzothieno[2,3-c]pyridine (CAS 1235872-86-2)
- Quinidine (hydrate) (CAS 66591-62-6)
- N-[3-(2-Chlorophenyl)propyl]-3-(2-methoxyethoxy)-aniline (CAS 1040686-85-8)
- 2-(2-Bromophenyl)-4'-iodoacetophenone (CAS 898783-86-3)
- Methyl 6-(3-Methoxyphenyl)nicotinate (CAS 869985-47-7)
- Methyl 4-(5-hydroxy-5-methyl-3-oxoisoxazolidin-2-yl)benzoate (CAS 371166-28-8)
- 4-Chloro-5-(((4-methoxyphenyl)thio)methyl)isoxazol-3(2H)-one (CAS 89661-16-5)
- TRAF6 Control Peptide trifluoroacetate salt (CAS 852690-80-3)
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