Atrasentan Impurity 202 CAS CATO-C4X-3347202
| CAS No. | CATO-C4X-3347202 |
| Molecular Formula | C29H38N2O6 |
| Molecular Weight | 510.62 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Atrasentan Impurity 202 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Atrasentan Impurity 202 (CAS CATO-C4X-3347202), a pharmacopoeial impurity reference standard (molecular formula C29H38N2O6, MW 510.62 g/mol) used for the identification and quantification of trace impurities in APIs.
Atrasentan Impurity 202 (C29H38N2O6) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C29H38N2O6 |
| Molecular Weight | 510.62 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Atrasentan Standards
- Atrasentan (CAS 173937-91-2)
- Atrasentan Impurity 197 (CAS CATO-C4X-3347197)
- Atrasentan Impurity 198 (CAS 173937-92-3)
- Atrasentan Impurity 199 (CAS CATO-C4X-3347199)
- Atrasentan Impurity 200 (CAS CATO-C4X-3347200)
- Atrasentan Impurity 201 (CAS 1797510-53-2)
- Atrasentan Impurity 158 (CAS 2469258-87-3)
- Atrasentan Impurity 159 (2S,3S,4R) (CAS 173864-34-1)
Recommended Standards
- Tetrahydro 3α-11-Deoxycorticosterone 3-(β-D-Glucuronide) (CAS 56162-36-8)
- Fmoc-Lys(Boc)(isopropyl)-OH (CAS 201003-48-7)
- eCF506 (CAS 1914078-41-3)
- 1,1',1''-((2,4,6-Trimethylbenzene-1,3,5-triyl)tris(methylene))tris(1H-benzo[d]imidazole) (CAS 325125-64-2)
- Argatroban Impurity 9 (CAS 79199-62-5)
- Docetaxel Impurity 72 (CAS 959123-35-4)
- Caspofungin Impurity 24 (CAS 1131958-73-0)
- 7-Bromo-4-fluoro-3-methyl-1H-indole (CAS 877160-23-1)
- 4-bromo-1-methyl-1H-benzo[d]imidazole-2-carbaldehyde (CAS 958863-76-8)
- (3R,7R,11R)-3,7,11,15-Tetramethylhexadecan-1-ol (CAS 18654-63-2)
- 6-Isobutoxy-5-methylpyridin-3-amine (CAS 1249789-40-9)
- 7-(2H-1,3-Benzodioxol-5-yl)-2-tert-butyl-[1,2,4]triazolo[1,5-a]pyridine-8-carbonitrile (CAS 860650-24-4)
- 2-(aminooxy)-2-methylpropan-1-ol hydrochloride (CAS 372105-52-7)
- Endo-Pro36-Tirzepatide (CAS CATO-CPTD788688)
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