693-71-0 (13E)-octadecenoic acid (13E)-octadec-13-enoic acid (E)-octadec-13-enoic acid trans-13-octadecenoic acid (E)-13-octadecenoic acid CHEBI:143770 CAS 693-71-0
| CAS No. | 693-71-0 |
| Molecular Formula | C18H34O2 |
| Molecular Weight | 282.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
693-71-0 (13E)-octadecenoic acid (13E)-octadec-13-enoic acid (E)-octadec-13-enoic acid trans-13-octadecenoic acid (E)-13-octadecenoic acid CHEBI:143770 (CAS 693-71-0) is a high-purity analytical reference standard with the molecular formula C18H34O2 and a molecular weight of 282.46 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 693-71-0 (13E)-octadecenoic acid (13E)-octadec-13-enoic acid (E)-octadec-13-enoic acid trans-13-octadecenoic acid (E)-13-octadecenoic acid CHEBI:143770 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 282.46 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C18H34O2 |
| Molecular Weight | 282.46 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1957 |
Related E Standards
- 9-Octadecenoic acid (9Z)-, copper salt (CAS 10402-16-1)
- (E)-7-Octadecenoic Acid (CAS 13126-32-4)
- cis-12-Octadecenoic acid (CAS 13126-37-9)
- (Z)-15-Octadecenoic acid, >96% (HPLC) (CAS 13126-43-7)
- 10-Octadecenoic Acid (E/Z Mixture) (CAS 3386-63-8)
- 6-trans-Octadecenoic acid (CAS 4712-34-9)
- 8-trans-Octadecenoic acid (CAS 2197-55-9)
- 9-Octadecenoic acid (CAS 2027-47-6)
Recommended Standards
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