Medroxyprogesterone Acetate Impurity 7 CAS 28018-91-9
| CAS No. | 28018-91-9 |
| Molecular Formula | C21H29BrO3 |
| Molecular Weight | 409.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 409.36 g/mol gives Medroxyprogesterone Acetate Impurity 7 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Medroxyprogesterone Acetate Impurity 7 (CAS 28018-91-9) is a high-purity analytical reference standard with the molecular formula C21H29BrO3 and a molecular weight of 409.36 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, bromine substitution, Medroxyprogesterone Acetate Impurity 7 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 409.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Medroxyprogesterone Acetate Impurity 7 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 | C21H29BrO3 |
| Molecular Weight | 409.36 g/mol |
| Appearance | Off-white to pale 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
Related Medroxyprogesterone Standards
- Medroxyprogesterone Acetate EP Impurity A (CAS 984-47-4)
- Medroxyprogesterone Impurity N1 (CAS 16319-93-0)
- Medroxyprogesterone impurity 8 (CAS 136803-81-1)
- Medroxyprogesterone Acetate Impurity 19 (CAS 71315-38-3)
- Medroxyprogesterone Acetate EP Impurity F (CAS 69688-15-9)
- Medroxyprogesterone Acetate EP Impurity D (CAS 2242-65-1)
- Medroxyprogesterone Acetate (CAS 71-58-9)
- Medroxyprogesterone Impurity 19 (CAS CATO-C4X-145719)
Recommended Standards
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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