1,1,3,3,5,5,7,7,9,9,11,11-Dodecamethylhexasiloxane CAS 995-82-4
| CAS No. | 995-82-4 |
| Molecular Formula | C12H38O5Si6 |
| Molecular Weight | 430.94 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,1,3,3,5,5,7,7,9,9,11,11-Dodecamethylhexasiloxane is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,1,3,3,5,5,7,7,9,9,11,11-Dodecamethylhexasiloxane (CAS 995-82-4) is a high-purity analytical reference standard with the molecular formula C12H38O5Si6 and a molecular weight of 430.94 g/mol.
Structurally, 1,1,3,3,5,5,7,7,9,9,11,11-Dodecamethylhexasiloxane (C12H38O5Si6) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of -6.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 430.94 g/mol, it falls into the moderately-high-molecular-weight range.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1,1,3,3,5,5,7,7,9,9,11,11-Dodecamethylhexasiloxane under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H38O5Si6 |
| Molecular Weight | 430.94 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | -6.0 |
| CAS Registry Year (est.) | 1957 |
Recommended Standards
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- 1-(4-Carboxyphenyl)-2,4,6-tri-p-tolylpyridin-1-ium perchlorate (CAS 76191-63-4)
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- 2-(3-Chlorophenyl)-1,3-thiazolidine-4-carboxylic acid (CAS 118721-55-4)
- 5-(2-Cyclohexylethyl)-4-ethyl-4H-1,2,4-triazole-3-thiol (CAS 590353-07-4)
- N-Chloro-p-toluenesulfonamide (CAS 144-86-5)
- 6-Bromo-2-(p-tolyl)quinoline-4-carboxylic acid (CAS 330194-05-3)
- 1-Hydroxycanthin-6-one (CAS 80787-59-3)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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