Methylprednisolone 21-Propionate CAS 138804-88-3
| CAS No. | 138804-88-3 |
| Molecular Formula | C25H34O6 |
| Molecular Weight | 430.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methylprednisolone 21-Propionate 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.
Methylprednisolone 21-Propionate (CAS 138804-88-3) is a high-purity analytical reference standard with the molecular formula C25H34O6 and a molecular weight of 430.53 g/mol.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Methylprednisolone 21-Propionate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 430.53 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 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.
Physical & Chemical Properties
| Molecular Formula | C25H34O6 |
| Molecular Weight | 430.53 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
Related Methylprednisolone Standards
- Methylprednisolone 17-Propionate (CAS 79512-61-1)
- Methylprednisolone Acetate EP Impurity G (CAS 1625-11-2)
- Methylprednisolone Acetate EP Impurity A (Mixture of Diastereomers) (CAS 151003-82-6)
- Methylprednisolone impurity 89 (CAS CATO-C4X-191989)
- Methylprednisolone impurity 90 (CAS CATO-C4X-191990)
- Methylprednisolone impurity 93 (CAS CATO-C4X-191993)
- Methylprednisolone impurity 85 (CAS CATO-C4X-191985)
- Methylprednisolone Acetate EP Impurity J (CAS 1048031-82-8)
Recommended Standards
- Budesonide (CAS 51333-22-3)
- Hydrocortisone Impurity 24 (CAS CATO-C4X-140124)
- (22R)-Budesonide (CAS 51372-29-3)
- Budesonide Impurity 75 (CAS CATO-C4X-138975)
- 5-(Benzyloxy)-4-fluoro-2-methyl-1H-indole (CAS 649736-47-0)
- Tert-butyl 3-((2-(dimethylamino)ethyl)amino)piperidine-1-carboxylate (CAS 887588-48-9)
- Ethyl 2-(5-chloro-4-formyl-2-methoxyphenoxy)acetate (CAS 255734-62-4)
- 7-Bromo-1,4,4-trimethyl-1,2,3,4-tetrahydroquinoline (CAS 129790-08-5)
- 3-(2,5-dimethylthiophen-3-yl)propanoic acid (CAS 26421-38-5)
- 1-(4-Chlorophenyl)-2-phenylimidazo[2,1-b]quinazolin-5(1H)-one (CAS 62481-21-4)
- 6-Hydrazino-1H-indazol-3-ylamine dihydrochloride (CAS 1303968-48-0)
- Tert-butyl cyclopropyl(piperidin-3-ylmethyl)carbamate (CAS 1353971-51-3)
- 2-Amino-2-cyclopropylpropanamide (CAS 111829-41-5)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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