(1R,3r,5S)-Ipratropium Impurity 41 CAS CATO-C4X-166541
| CAS No. | CATO-C4X-166541 |
| Molecular Formula | C18H23NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, (1R,3r,5S)-Ipratropium Impurity 41 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 337.84 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies (1R,3r,5S)-Ipratropium Impurity 41 (CAS CATO-C4X-166541), a pharmacopoeial impurity reference standard (molecular formula C18H23NO3HCl, MW 337.84 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.
As a certified reference material (CRM), (1R,3r,5S)-Ipratropium Impurity 41 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 | C18H23NO3 HCl |
| Molecular Weight | 337.84 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- Levodopa Impurity 8 (CAS 64192-68-3)
- Etravirine Impurity 6 (CAS 1704730-70-0)
- Roxadustat Impurity 17 (CAS CATO-C4X-221317)
- Pyrimidine-2-carboxylic acid hydrazide (CAS 87362-28-5)
- 1-[2-(tert-butoxy)-2-oxoethyl]-1H-pyrrole-2-carboxylic acid (CAS 1909336-14-6)
- Quinolin-8-yl butylcarbamate (CAS 61824-42-8)
- Z,Z-Dienestrol-d6 (CAS 91297-99-3)
- 3-Chloro-2-fluoro-5-(trifluoromethyl)benzenesulfonyl chloride (CAS 1706458-27-6)
- Methyl thiazolo[4,5-c]pyridine-6-carboxylate (CAS 1206973-17-2)
- Endo-Gly29-Tirzepatide (CAS CATO-CPTD788685)
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