Corticosterone 21-Carboxylic Acid CAS 33762-00-4
| CAS No. | 33762-00-4 |
| Molecular Formula | C21H28O5 |
| Molecular Weight | 360.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Corticosterone 21-Carboxylic Acid (C21H28O5) contains a flavonoid core, 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. 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).
CATO supplies Corticosterone 21-Carboxylic Acid (CAS 33762-00-4), a certified reference material (molecular formula C21H28O5, MW 360.44 g/mol) for analytical method development and quality control.
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), Corticosterone 21-Carboxylic Acid 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 | C21H28O5 |
| Molecular Weight | 360.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Related Corticosterone Standards
Recommended Standards
- 4-((4-Ethyl-2,6-difluorophenyl)ethynyl)-4'-propyl-1,1'-biphenyl (CAS 221526-72-3)
- Prednisolone Impurity 37 (CAS 307518-72-5)
- 4-((2,6-Difluoro-4-propylphenyl)ethynyl)-4'-ethyl-1,1'-biphenyl (CAS 221526-78-9)
- (2R,3S)-3-(3-HYDROXYPROPOXY)-1,4-BIS(PHENYLMETHOXY)-2-BUTANOL 200636-15-3 (CAS 200636-15-3)
- Ethyl 2,3,4,5-tetrafluorobenzoate (CAS 122894-73-9)
- 6-(3-Methoxyphenoxy)-3-pyridinamine (CAS 305801-13-2)
- 5-Chloro-4-(cyclohexylamino)-2-phenyl-4,5-dihydropyridazin-3(2H)-one (CAS 92961-87-0)
- 3-(2,3-Dichlorophenyl)-2-oxopropanoic acid (CAS 933687-00-4)
- 1-((Benzyloxy)carbonyl)-3-(4-chlorobenzyl)piperidine-3-carboxylic acid (CAS 197887-27-7)
- 2-Phenylazepane (CAS 3466-82-8)
- 5-Methyl-1-p-tolyl-1H-pyrazole-4-carbonyl chloride (CAS 959574-46-0)
- (2S,4R,5R,6R)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,4,5-triol (CAS 14215-77-1)
- 2,6-Diphenyl-4-(trifluoromethyl)pyridine (CAS 403665-17-8)
- Semaglutide impurity 274 (CAS CATO-C4X-2226274)
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