2,3-Dihydro-3-methoxywithaferin A CAS 21902-96-5
| CAS No. | 21902-96-5 |
| Molecular Formula | C29H42O7 |
| Molecular Weight | 502.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,3-Dihydro-3-methoxywithaferin A is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,3-Dihydro-3-methoxywithaferin A (CAS 21902-96-5) is a high-purity analytical reference standard with the molecular formula C29H42O7 and a molecular weight of 502.64 g/mol.
2,3-Dihydro-3-methoxywithaferin A (C29H42O7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,3-Dihydro-3-methoxywithaferin A meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C29H42O7 |
| Molecular Weight | 502.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
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Recommended Standards
- (2E,4S,5S,6E,8E)-10-((2R,3S,6S,8R,9S)-8-((1E,3E)-4-Carboxy-3-methylbuta-1,3-dien-1-yl)-3,9-dimethyl-1,7-dioxaspiro[5.5]undecan-2-yl)-5-hydroxy-4,8-dimethyldeca-2,6,8-trienoic acid (CAS 214143-44-9)
- 3β-Methoxy-2,3-dihydrowithaferin A (CAS 73365-94-3)
- Mupirocin Impurity 18 (CAS 1246812-11-2)
- O-Desethyl-O-propyl Methisosildenafil (CAS 1391053-82-9)
- 3-Fluoro-3-thiomorpholinomethyl benzophenone (CAS 898763-07-0)
- 2-(tert-Butyl)-5-hydroxy-4-methylpyridazin-3(2H)-one (CAS 104010-22-2)
- N-Fmoc-6-methyl-L-tryptophan (CAS 908846-99-1)
- Methyl 5-chloro-6-(trifluoromethyl)pyrazine-2-carboxylate (CAS 1688685-61-1)
- 4-(2-Difluoromethoxyphenyl)thiosemicarbazide (CAS 1152587-35-3)
- N-methyl-N-(piperidin-4-yl)-4-(trifluoromethyl)benzamide hydrochloride (CAS 1580795-67-0)
- (3-Cyano-2-hydroxyphenyl)trifluoroborate (CAS 2376462-72-3)
- 1-Benzyl-4-methylpyrrolidine-3-carboxylic acid hydrochloride (CAS 1955561-60-0)
- Methyl 15-Oxo Gibberellin A3 Diacetate (CAS 105593-11-1)
- Acetyl Hexapeptide-39 (CAS 1382088-38-1)
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