Indacaterol Impurity 40 （S-Isomer） CAS 312753-76-7
| CAS No. | 312753-76-7 |
| Molecular Formula | C18H15NO3 |
| Molecular Weight | 293.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Indacaterol Impurity 40 （S-Isomer） (C18H15NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Indacaterol Impurity 40 （S-Isomer） (CAS 312753-76-7, C18H15NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
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 | C18H15NO3 |
| Molecular Weight | 293.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related Indacaterol Standards
- Indacaterol Impurity 14 (CAS 173140-90-4)
- Indacaterol Impurity 6 (CAS 93609-84-8)
- Indacaterol Impurity 72 (CAS CATO-C4X-150072)
- Indacaterol Impurity 69 (CAS CATO-C4X-150069)
- Indacaterol impurity 74 (CAS CATO-C4X-150074)
- Indacaterol Impurity 92 (CAS CATO-C4X-150092)
- Indacaterol Impurity 66 (CAS 1261219-83-3)
- Indacaterol Impurity 68 (CAS 1823795-12-5)
Recommended Standards
- Domperidone Impurity 11 (CAS 85443-52-3)
- Etomidate Impurity 43 (CAS CATO-C4X-188443)
- Sodium Picosulfate Impurity 9 (CAS 2379877-99-1)
- Lornoxicam Impurity 37 (CAS 106820-63-7)
- Etoposide EP Impurity B (CAS 100007-56-5)
- Miglitol Impurity C (CAS 1550201-56-3)
- Cefpodoxime Impurity 48 (CAS CATO-C4X-157948)
- 2-(6-Bromo-4-methoxypyridin-3-yl)acetonitrile (CAS 1804507-66-1)
- 4-(3,4-Dimethoxy-phenyl)-thiazol-2-ylamine (CAS 51837-85-5)
- 2-((2-Chlorophenyl)amino)propanoic acid (CAS 35224-54-5)
- 2-(Phenylamino)-7,8-dihydroquinazolin-5(6H)-one (CAS 1185008-52-9)
- 3-Chloro-4-(pentyloxy)benzaldehyde (CAS 100388-69-0)
- (7-Benzyl-5,6,7,8-tetrahydroimidazo[1,5-a]pyrazin-3-yl)methanamine (CAS 1372534-23-0)
- Semaglutide Impurity 148 (CAS CATO-C4X-2226148)
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