Octadecanoic acid, polymer with silica and 2-[[3-(trimethoxysilyl)propoxy]methyl]oxirane CAS 67953-81-5
| CAS No. | 67953-81-5 |
| Molecular Formula | C18H36O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Octadecanoic acid, polymer with silica and 2-[[3-(trimethoxysilyl)propoxy]methyl]oxirane (C18H36O2C9H20O5SiO2Si) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
Octadecanoic acid, polymer with silica and 2-[[3-(trimethoxysilyl)propoxy]methyl]oxirane (CAS 67953-81-5), molecular formula C18H36O2C9H20O5SiO2Si and molecular weight 580.91 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H36O2 C9H20O5Si O2Si |
| Molecular Weight | 580.91 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 0.0 |
| CAS Registry Year (est.) | 1976 |
Related Octadecanoic Standards
- Octadecanoic acid, octyl ester (CAS 109-36-4)
- Octadecanoic Acid Ethyl Ester (CAS 111-61-5)
- Octadecanoic acid, 2-sulfo- (CAS 1115-17-9)
- Octadecanoic Acid Methyl Ester (CAS 112-61-8)
- Octadecanoic-9,9,10,10-d4 Acid (CAS 130048-57-6)
- Octadecanoic acid, 9-(sulfooxy)-, 1-methyl ester, sodium salt (1:1) (CAS 139-99-1)
- octadecanoic acid (CAS 1957-11-4)
- Octadecanoic-2,2-d2 Acid (CAS 19905-58-9)
Recommended Standards
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- 1,8-Dioxaspiro[4.5]decan-4-one (CAS 2137765-75-2)
- Methyl 2-(3-methyl-5-nitro-1h-indazol-1-yl)acetate (CAS 1423027-80-8)
- (3-Fluoro-8-azabicyclo[3.2.1]Octan-3-yl)methanamine (CAS 2097995-92-9)
- (4-Chloro-2-fluorophenyl)(thiophen-3-yl)methanone (CAS 898771-47-6)
- Chlorprothixene EP Impurity F (CAS 4546-35-4)
- Dobutamine Impurity 10 (CAS CATO-C4X-129810)
- (E)-4-Ethoxy-2-(trifluoromethyl)-2-((trimethylsilyl)oxy)but-3-enenitrile (CAS 244074-91-7)
- Peptide YY (human) trifluoroacetate salt (CAS 118997-30-1)
Why CATO?
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