Aclidinium bromide Impurity 12 CAS 320347-97-5
| CAS No. | 320347-97-5 |
| Molecular Formula | C17H19NO3S2 |
| Molecular Weight | 349.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Aclidinium bromide Impurity 12 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 349.47 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).
CATO supplies Aclidinium bromide Impurity 12 (CAS 320347-97-5), a pharmacopoeial impurity reference standard (molecular formula C17H19NO3S2, MW 349.47 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C17H19NO3S2 |
| Molecular Weight | 349.47 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Aclidinium Standards
- Aclidinium bromide Impurity 17 (CAS CATO-C4X-132517)
- Aclidinium bromide Impurity 14 (CAS CATO-C4X-132514)
- Aclidinium bromide Impurity 16 (CAS CATO-C4X-132516)
- Aclidinium bromide Impurity 15 (CAS CATO-C4X-132515)
- Aclidinium bromide Impurity 4 (CAS 28569-88-2)
- Aclidinium bromide Impurity 11 (CAS CATO-C4X-132511)
- Aclidinium bromide Impurity 2 (CAS 7333-07-5)
- Aclidinium bromide Impurity 8 (CAS 4075-58-5)
Recommended Standards
- Tofacitinib Impurity 112 (CAS CATO-C4X-1079112)
- N1-((1H-Benzo[d]imidazol-2-yl)methyl)-N1-(5,6,7,8-tetrahydroquinolin-8-yl)butane-1,4-diamine (CAS 558441-90-0)
- Trihexyphenidyl impurity 17 (CAS 19734-59-9)
- N-[2-Hydroxy-2-(2-naphthyl)ethyl]-1-adamantanecarboxamide (CAS 400088-22-4)
- Allopurinol impurity 29 (CAS CATO-C4X-145829)
- Felbinac impurity 4 (CAS 1286423-88-8)
- Rocuronium impurity 66 (CAS 930092-99-2)
- 5-Hydroxy-3-methoxypicolinaldehyde (CAS 1289039-21-9)
- 2-Hydroxy-3,3-dimethylbutanenitrile (CAS 33350-17-3)
- Azido-PEG9-azide (CAS 1171122-72-7)
- 5-(2-Pyrazinyl)-1,3,4-thiadiazol-2-amine (CAS 383130-62-9)
- Ethyl 4-oxo-3,4-dihydrothieno[3,2-d]pyrimidine-2-carboxylate (CAS 319442-19-8)
- Tert-butyl 3-(pyrrolidin-3-yl)piperidine-1-carboxylate (CAS 1314776-19-6)
- Semaglutide impurity 51 (CAS CATO-C4X-222651)
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