Budesonide impurity 43 CAS CATO-C4X-138943
| CAS No. | CATO-C4X-138943 |
| Molecular Formula | C23H27BrO7 |
| Molecular Weight | 495.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Budesonide impurity 43 is closely related to a flavonoid core, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Budesonide impurity 43 (CAS CATO-C4X-138943), a pharmacopoeial impurity reference standard (molecular formula C23H27BrO7, MW 495.36 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Budesonide impurity 43 (C23H27BrO7) is characterized by a flavonoid core, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Budesonide impurity 43 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 | C23H27BrO7 |
| Molecular Weight | 495.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
Related Budesonide Standards
- Budesonide Impurity 51 (CAS CATO-C4X-138951)
- Budesonide Impurity 62 (CAS CATO-C4X-138962)
- Budesonide Impurity 69 (CAS CATO-C4X-138969)
- Budesonide Impurity 40 (CAS 91160-89-3)
- Budesonide Impurity 72 (CAS CATO-C4X-138972)
- Budesonide Impurity 67 (CAS CATO-C4X-138967)
- Budesonide Impurity 53 (CAS CATO-C4X-138953)
- Budesonide Impurity 71 (CAS 91160-87-1)
Recommended Standards
- Empagliflozin Impurity 76 (CAS CATO-C4X-106576)
- Empagliflozin impurity 212 (CAS CATO-C4X-1065212)
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- Methyl 3,5-bis(4-chlorophenyl)-4,6-dioxo-1-phenyloctahydropyrrolo[3,4-c]pyrrole-1-carboxylate (CAS 317821-77-5)
- Orbifloxacin EP Impurity G (CAS CATO-C4X-25676)
- Dalilesen Impurity 22 (CAS CATO-C4X-301022)
- Celecoxib Impurity 28 (CAS CATO-C4X-104328)
- [2-(Tert-butoxycarbonylamino)-3-cyano-7-fluoro-benzothiophen-4-yl]boronic acid (CAS 2892621-47-3)
- 3-Fluoro-4-(3-methoxypropoxy)aniline (CAS 946785-56-4)
- 2-(4-Isopropylphenyl)-4-methylpyridine (CAS 80635-97-8)
- 1-(4-Chlorophenyl)-N-(1-(tetrahydrofuran-3-yl)-1H-pyrazol-4-yl)methanesulfonamide (CAS 1797351-10-0)
- 4-(Isonicotinamido)pentanoic acid (CAS 1341853-18-6)
- 4-(Phenylthio)quinoline-3-carboxylic acid (CAS 88350-88-3)
- Semaglutide-d5 (CAS CATO-C4X-2226153)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com