Budesonide Impurity 21 CAS 85234-64-6
| CAS No. | 85234-64-6 |
| Molecular Formula | C23H30O5 |
| Molecular Weight | 386.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 386.48 g/mol gives Budesonide Impurity 21 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Budesonide Impurity 21 (CAS 85234-64-6) is a certified pharmaceutical impurity reference standard with the molecular formula C23H30O5 and a molecular weight of 386.48 g/mol.
Budesonide Impurity 21 (C23H30O5) 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Budesonide Impurity 21 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C23H30O5 |
| Molecular Weight | 386.48 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
Related Budesonide Standards
- Budesonide Impurity 16 (CAS 3044-42-6)
- Budesonide Impurity 30 (CAS 1234572-34-9)
- Budesonide Impurity 79 (Z-Isomer) (CAS 118866-09-4)
- Budesonide Impurity N22 (CAS 82423-35-6)
- Budesonide Impurity 57 (CAS CATO-C4X-138957)
- Budesonide Impurity 81 (CAS CATO-C4X-138981)
- Budesonide Impurity 34 (CAS 1171-81-9)
- Budesonide EP Impurity A (CAS 13951-70-7)
Recommended Standards
- Spironolactone Impurity 11 (CAS 2537956-65-1)
- Medroxyprogesterone Impurity 12 (CAS 61345-71-9)
- O1,O4-ditert-butyl O2-ethyl 5,5-dimethylpiperazine-1,2,4-tricarboxylate (CAS 363192-03-4)
- Progesterone Impurity 88 (CAS 6723-95-1)
- Fluvoxamine impurity 49 (CAS CATO-C4X-195149)
- Ibrutinib Impurity 101 (CAS CATO-C4X-1064101)
- Travoprost Impurity 20 (CAS 1642863-99-7)
- 4-{[(3-Dimethylamino-propyl)-methyl-amino]-methyl}-benzoic acid dihydrochloride (CAS 1187931-64-1)
- Cycloheptanecarbonitrile (CAS 32730-85-1)
- Erlotinib Impurity 97 (CAS 1012057-39-4)
- Tributylphosphine (CAS 998-40-3)
- 8-Bromo-7-butyl-1,3-dimethyl-3,7-dihydro-1H-purine-2,6-dione (CAS 7465-14-7)
- Ethyl 3-(4-Bromophenyl)-5-(trifluoromethyl)isoxazole-4-carboxylate (CAS 1159978-86-5)
- Semaglutide Impurity 12 (CAS CATO-C4X-222612)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com