Abiraterone Impurity 43 CAS CATO-C4X-107043
| CAS No. | CATO-C4X-107043 |
| Molecular Formula | C24H31NO2 |
| Molecular Weight | 365.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Abiraterone Impurity 43 (CAS CATO-C4X-107043) is a certified pharmaceutical impurity reference standard with the molecular formula C24H31NO2 and a molecular weight of 365.51 g/mol.
The molecular framework of Abiraterone Impurity 43 (C24H31NO2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C24H31NO2 |
| Molecular Weight | 365.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| 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 |
| Nitrogen Atoms | 1 |
Related Abiraterone Standards
- Abiraterone Impurity 12 (CAS CATO-C4X-107012)
- Abiraterone Impurity 41 (CAS CATO-C4X-107041)
- Abiraterone Impurity 59 (CAS CATO-C4X-107059)
- Abiraterone Impurity 60 (CAS 1868064-51-0)
- Abiraterone Impurity 63 (CAS CATO-C4X-107063)
- Abiraterone Impurity 54 (CAS 1470276-23-3)
- Abiraterone Impurity 75 (CAS 1416316-29-4)
- Abiraterone Impurity 19 (CAS 2484719-16-4)
Recommended Standards
- Deoxydonepezil (CAS 844694-84-4)
- Phenyl N-[4-(4-pentylcyclohexyl)phenyl]carbamate (CAS 692732-86-8)
- Blonanserin Impurity 8 (CAS CATO-C4X-11108)
- N-(3,5-dimethylphenyl)-8-methyl-4H-thieno[3,2-c]thiochromene-2-carboxamide (CAS 477887-17-5)
- LCZ-696 Impurity 89 (CAS CATO-C4X-169689)
- Chlorprothixene EP Impurity A (CAS 4295-65-2)
- Sulbactam Impurity 18 (CAS CATO-C4X-175618)
- 1-(3,4-dimethoxyphenyl)-2,2,2-trifluoroethan-1-amine hydrochloride (CAS 1193387-21-1)
- 4-Chloro-5-(difluoromethyl)-6-fluoropyridine-2-sulfonamide (CAS 1806933-75-4)
- N-(2-((3-Phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)-2-(thiophen-2-yl)acetamide (CAS 1058249-85-6)
- 2,2-Difluoro-2-(3-(trifluoromethyl)phenoxy)-N-(4-(trifluoromethyl)phenyl)acetamide (CAS 338792-23-7)
- 4-Bromo-5-fluoro-2-methoxypyridine (CAS 884495-00-5)
- 4-(2-Hydroxyethyl)-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 861210-10-8)
- Liraglutide Impurity 6 TFA Salt (CAS CATO-C4X-19926)
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