Betamethasone Impurity 32 CAS CATO-C4X-147432
| CAS No. | CATO-C4X-147432 |
| Molecular Formula | C25H31ClO5 |
| Molecular Weight | 446.96 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Betamethasone Impurity 32 (CAS CATO-C4X-147432) is a certified pharmaceutical impurity reference standard with the molecular formula C25H31ClO5 and a molecular weight of 446.96 g/mol.
Based on its molecular formula C25H31ClO5, Betamethasone Impurity 32 contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 446.96 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
As a certified reference material (CRM), Betamethasone Impurity 32 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 | C25H31ClO5 |
| Molecular Weight | 446.96 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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 | Cl-containing |
Related Betamethasone Standards
- Betamethasone impurity 114 (CAS 72559-76-3)
- Betamethasone impurity 66 (CAS 4735-64-2)
- Betamethasone Impurity 108 (CAS CATO-C4X-1437108)
- Betamethasone Impurity 111 (CAS CATO-C4X-1437111)
- Betamethasone Impurity 143 (CAS CATO-C4X-1437143)
- Betamethasone Impurity 28 (CAS CATO-C4X-143728)
- Betamethasone impurity 48 (CAS CATO-C4X-143748)
- Betamethasone Impurity 42 (CAS 25122-45-6)
Recommended Standards
- 1,3,5-Tris(bromomethyl)-2,4,6-trimethoxybenzene (CAS 434323-17-8)
- rel-(1R,5S)-3-(2-Chloro-4-(methylsulfonyl)benzoyl)-4-(phenylthio)bicyclo[3.2.1]oct-3-en-2-one (CAS 1435933-73-5)
- N-(3-Chloro-4-methylphenyl)-2-((5,6-diphenyl-1,2,4-triazin-3-yl)thio)acetamide (CAS 333328-32-8)
- 5-Chloro-N1,N1,N3,N3-tetraphenylbenzene-1,3-diamine (CAS 1630850-28-0)
- Lenvatinib Impurity 98 (CAS CATO-C4X-114098)
- Crizotinib Impurity 70 (CAS CATO-C4X-102570)
- Rimegepant Impurity 67 (CAS CATO-C4X-248767)
- tert-Butyl (4-iodo-5-methoxypyridin-3-yl)methylcarbamate (CAS 1138444-20-8)
- Calcein-AM (CAS 148504-34-1)
- 7-Bromo-3H-imidazo[4,5-b]pyridine-2-carbaldehyde (CAS 2306277-83-6)
- 5-Cyclopropoxy-6-(methylamino)nicotinamide (CAS 1243407-50-2)
- 2-Amino-7-propyl-1H-purin-6(7H)-one (CAS 33016-34-1)
- 2-(Difluoromethyl)-6-hydroxy-4-methylpyridine-3-carbonyl chloride (CAS 1805534-72-8)
- Semaglutide Impurity 18 (CAS 1671100-14-3)
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