Umeclidinium Impurity 3 CAS 869113-45-1
| CAS No. | 869113-45-1 |
| Molecular Formula | C29H32NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 522.48 g/mol gives Umeclidinium Impurity 3 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Umeclidinium Impurity 3 (CAS 869113-45-1, C29H32NO3Br) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution, Umeclidinium Impurity 3 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 522.48 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).
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.
As a certified reference material (CRM), Umeclidinium Impurity 3 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 | C29H32NO3 Br |
| Molecular Weight | 522.48 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 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Umeclidinium Standards
- Umeclidinium Bromide Impurity 25 (CAS 119102-52-2)
- Umeclidinium impurity 26 (CAS 1248400-28-3)
- Umeclidinium Impurity 1 (CAS 1509910-91-1)
- Umeclidinium impurity 22 (CAS 17229-17-3)
- Umeclidinium Impurity 15 (CAS 2230024-91-4(free base))
- Umeclidinium Impurity 19 (CAS 2253743-32-5)
- Umeclidinium Impurity 13 (CAS 2253743-36-9)
- Umeclidinium Impurity 11 (CAS 2253743-38-1)
Recommended Standards
- CMC2026 Impurity 3 (CAS CATO-C4X-22663)
- Ertugliflozin Impurity 2 (CAS CATO-C4X-30112)
- Mirogabalin Impurity 6 (CAS CATO-C4X-29246)
- 2-(2-Bromoethyl) benzaldehyde (CAS 22901-09-3)
- 3-(2-Fluorophenyl)-6-(trifluoromethyl)pyridine-2-thiol (CAS 1214349-46-8)
- Ethyl 3,5-dichloro-2-methylphenylacetate (CAS 1804516-60-6)
- 3-Nitro-N-(piperidin-3-ylmethyl)pyridin-2-amine hydrochloride (CAS 1185319-15-6)
- Iopromide-[d3] (CAS 1189947-73-6)
- 2-Chloro-4-hydroxybenzaldehyde (CAS 56962-11-9)
- Semaglutide (CAS 910463-68-2)
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