7-Oxodehydroabietic acid CAS 18684-55-4
| CAS No. | 18684-55-4 |
| Molecular Formula | C20H26O3 |
| Molecular Weight | 314.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Oxodehydroabietic acid is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 7-Oxodehydroabietic acid (CAS 18684-55-4), a certified reference material (molecular formula C20H26O3, MW 314.42 g/mol) for analytical method development and quality control.
Based on its molecular formula C20H26O3, 7-Oxodehydroabietic acid contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 314.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C20H26O3 |
| Molecular Weight | 314.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Recommended Standards
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- DITERT-BUTYL CYCLOHEXANE-1,3-DIYLDICARBAMATE (CAS 1823244-92-3)
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- N-benzylquinoline-6-carboxamide (CAS 6843-60-3)
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- 2-Chloro-4-morpholinothieno[2,3-d]pyrimidine-6-carbaldehyde (CAS 955978-98-0)
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- (2R,3S)-2-(2,4-Dihydroxyphenyl)-3,7-dihydroxy-5-methoxy-8-((R)-5-methyl-2-(prop-1-en-2-yl)hex-4-en-1-yl)chroman-4-one (CAS 102490-65-3)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
Why CATO?
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