Atrasentan Impurity 138 CAS 1058349-16-8
| CAS No. | 1058349-16-8 |
| Molecular Formula | C31H42N2O6 |
| Molecular Weight | 538.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Atrasentan Impurity 138 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.
CATO supplies Atrasentan Impurity 138 (CAS 1058349-16-8), a pharmacopoeial impurity reference standard (molecular formula C31H42N2O6, MW 538.68 g/mol) used for the identification and quantification of trace impurities in APIs.
Atrasentan Impurity 138 (C31H42N2O6) contains a nitrogen-containing heterocyclic scaffold, 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.
Physical & Chemical Properties
| Molecular Formula | C31H42N2O6 |
| Molecular Weight | 538.68 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
Related Atrasentan Standards
- Atrasentan Impurity 118 (CAS 1059759-94-2)
- Atrasentan Impurity 119 (CAS 209214-33-5)
- Atrasentan Impurity 121 (CAS 195708-08-8)
- Atrasentan Impurity 135 (CAS 1058349-10-2)
- Atrasentan Impurity 157 (CAS 1073727-25-9)
- Atrasentan Impurity 163 (CAS 1059025-59-0)
- Atrasentan Impurity 171 (CAS 1059051-90-9)
- Atrasentan Impurity 43 (CAS 223139-35-3)
Recommended Standards
- 6-Chloro-2-iodo-9-(2’,3’,5’-tri-O-acetyl-β-D-ribofuranosyl)purine (CAS 5987-76-8)
- Atrasentan Impurity 72 (CAS 1058404-69-5)
- 3,3''-(((1R,2R)-Cyclohexane-1,2-diylbis(azanediyl))bis(methylene))bis(2'-methoxy-[1,1'-biphenyl]-2-ol) (CAS 928769-12-4)
- (R)-3-(Hexadecyloxy)-2-((methylcarbamoyl)oxy)propyl (2-(trimethylammonio)ethyl) phosphate (CAS 91575-58-5)
- Elagolix Impurity 91 (CAS CATO-C4X-206891)
- Tebipenem impurity 20 (CAS CATO-C4X-134720)
- Bedaquiline Impurity 28 (CAS CATO-C4X-116728)
- 1-(2,4-Dibromopyridin-3-yl)ethanone (CAS 1936720-65-8)
- 8-Chloro-4-((2,4-dichlorobenzyl)thio)cinnoline (CAS 5388-41-0)
- 2-Chloro-n-[4-(phenylamino)phenyl]-n-(propan-2-yl)acetamide (CAS 15143-43-8)
- 4-Cyanothiane-4-carboxylic acid (CAS 1262410-89-8)
- 3-((3-Cyano-4-(trifluoromethyl)-5,6,7,8-tetrahydroquinolin-2-yl)thio)propanamide (CAS 905787-17-9)
- 4-(5-Ethoxy-1,3,4-oxadiazol-2-yl)benzonitrile (CAS 154548-68-2)
- [pGlu] Semaglutide (CAS CATO-C4X-2226288)
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