Dexamethasone 21-Phosphate D5 CAS 312-93-6 (unlabelled)
| CAS No. | 312-93-6 (unlabelled) |
| Molecular Formula | - |
| Molecular Weight | 477.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 477.47 g/mol gives Dexamethasone 21-Phosphate D5 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Dexamethasone 21-Phosphate D5 (CAS 312-93-6 (unlabelled)), a certified reference material (molecular formula C22H25D5FO8P, MW 477.47 g/mol) for analytical method development and quality control.
Structurally, Dexamethasone 21-Phosphate D5 (C22H25D5FO8P) contains deuterium isotope labeling, a flavonoid core, a phosphate ester group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 477.47 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Dexamethasone 21-Phosphate D5 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 | C22H25D5FO8P |
| Molecular Weight | 477.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| 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 | F-containing |
Related Dexamethasone Standards
- Dexamethasone Impurity 121 (CAS 2600-31-9)
- Dexamethasone Acetate EP Impurity I (CAS 3949-26-6)
- Dexamethasone Sodium Phosphate EP Impurity H (CAS 162968-22-1)
- Dexamethasone impurity 93 (CAS 2414-45-1)
- Dexamethasone Impurity 108 (CAS CATO-C4X-1165108)
- Dexamethasone Impurity 109 (CAS CATO-C4X-1165109)
- Dexamethasone Impurity 117 (CAS CATO-C4X-1165117)
- Dexamethasone Impurity 128 (CAS CATO-C4X-1165128)
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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