Ipratropium Impurity 38 CAS 40195-49-1
| CAS No. | 40195-49-1 |
| Molecular Formula | C17H16O3 |
| Molecular Weight | 268.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ipratropium Impurity 38 is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Ipratropium Impurity 38 (CAS 40195-49-1) is a certified pharmaceutical impurity reference standard with the molecular formula C17H16O3 and a molecular weight of 268.31 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, Ipratropium Impurity 38 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 268.31 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 supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Ipratropium Impurity 38 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 | C17H16O3 |
| Molecular Weight | 268.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
Related Ipratropium Standards
- Ipratropium Impurity 42 (CAS 54108-62-2)
- Ipratropium Bromide EP Impurity E (CAS 22235-81-0)
- Ipratropium Impurity 25 (CAS CATO-C4X-166525)
- Ipratropium impurity 46 (CAS CATO-C4X-166546)
- Ipratropium Impurity 22 (CAS 3979-14-4)
- Ipratropium Impurity 17 (CAS 17838-69-6)
- Ipratropium Impurity 11 (CAS 5894-79-1)
- Ipratropium Impurity 23 (CAS CATO-C4X-166523)
Recommended Standards
- Ketoprofen Impurity 73 (CAS CATO-C4X-147173)
- Ergometrine EP Impurity B (CAS 478-95-5)
- Ketoprofen Impurity 40 (CAS 47087-07-0)
- Melphalan EP Impurity A (CAS 72143-20-5)
- Malic Acid Impurity 7 (CAS CATO-C4X-25097)
- Crizotinib Impurity 44 (CAS CATO-C4X-102544)
- Epinastine Impurity 24 (CAS 1110929-19-5)
- 1-(3-aminophenyl)-1,3-diazinan-2-one (CAS 1250772-67-8)
- 5-Nitro-2-(pyridin-3-yl)-1H-benzo[d]imidazole (CAS 145861-59-2)
- 1-(2,3-Dimethylphenyl)pyrrolidin-3-amine (CAS 1096305-18-8)
- Eldecalcitol Impurity 41 (CAS 214351-92-5)
- Fluoromethoxycarbonyl-O-tert-butyl-D-threonine L-phenylalanine (CAS CATO-CPTD788878)
- 2-(4-Bromo-phenyl)-4,5,6,7-tetrahydro-oxazolo[4,5-c]pyridine (CAS 885272-77-5)
- Macrophage Inhibitory Peptide (CAS 41961-56-2)
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