Umeclidinium Impurity 8 CAS 55022-88-3
| CAS No. | 55022-88-3 |
| Molecular Formula | C8H13NO2 |
| Molecular Weight | 155.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Umeclidinium Impurity 8 (CAS 55022-88-3), a pharmacopoeial impurity reference standard (molecular formula C8H13NO2, MW 155.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Umeclidinium Impurity 8 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 155.19 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H13NO2 |
| Molecular Weight | 155.19 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 1 |
Related Umeclidinium Standards
- Umeclidinium impurity 23 (CAS 622-08-2)
- Umeclidinium impurity 24 (CAS 51069-26-2)
- Umeclidinium impurity 22 (CAS 17229-17-3)
- Umeclidinium Bromide Impurity 25 (CAS 119102-52-2)
- Umeclidinium Impurity 1 (CAS 1509910-91-1)
- Umeclidinium impurity 25 (CAS 22766-68-3)
- Umeclidinium Impurity 16 (CAS 939900-20-6)
- Umeclidinium impurity 26 (CAS 1248400-28-3)
Recommended Standards
- Pregabalin impurity 95 (CAS 164597-78-8)
- Tiotropium Bromide Impurity 19 (CAS 498-46-4)
- pregabalin Impurity 36 (CAS 181289-16-7)
- Tiotropium Bromide Impurity 33 (CAS 498-45-3)
- Flubendazole EP Impurity D (CAS 1515807-30-3)
- Mitoxantrone Impurity 13 (CAS 70476-74-3)
- Theophylline Impurity 3 (CAS 60797-68-4)
- n-(2-Aminoethyl)-n-ethylcyclopropanamine (CAS 151793-24-7)
- (2-Bromo-1,1-difluoroethyl)cyclopropane (CAS 1330779-10-6)
- 3-Chloro-6-fluoro-8-methoxyquinoline (CAS 1823963-58-1)
- N-(4-Bromo-3-chloro-2-fluorophenyl)acetamide (CAS 143360-05-8)
- Niclofolan (CAS 10331-57-4)
- 6-Isopropyl-2-pyridin-3-ylquinoline-4-carboxylic acid (CAS 897561-18-1)
- D-[His]1-Semaglutide (CAS CATO-C4X-222652)
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