Atrasentan Impurity 189 CAS CATO-C4X-3347189
| CAS No. | CATO-C4X-3347189 |
| Molecular Formula | C21H23NO5 |
| Molecular Weight | 369.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Atrasentan Impurity 189.
CATO supplies Atrasentan Impurity 189 (CAS CATO-C4X-3347189), a pharmacopoeial impurity reference standard (molecular formula C21H23NO5, MW 369.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C21H23NO5, Atrasentan Impurity 189 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 369.41 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
CATO manufactures Atrasentan Impurity 189 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 | C21H23NO5 |
| Molecular Weight | 369.41 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Atrasentan Standards
- Atrasentan Impurity 186 (CAS CATO-C4X-3347186)
- Atrasentan Impurity 187(2S,3S,4S) (CAS CATO-C4X-3347187)
- Atrasentan Impurity 188 (CAS CATO-C4X-3347188)
- Atrasentan Impurity 190 (CAS CATO-C4X-3347190)
- Atrasentan Impurity 191 (CAS CATO-C4X-3347191)
- Atrasentan Impurity 203 (CAS CATO-C4X-3347203)
- Atrasentan Impurity 4 (CAS CATO-C4X-33474)
- Atrasentan Impurity 204 (CAS CATO-C4X-3347204)
Recommended Standards
- Relebactam Impurity 152 (CAS CATO-C4X-2144152)
- Allocryptopine (CAS 485-91-6)
- Naltrexone impurity 50 (CAS CATO-C4X-147550)
- H-Gly-Phe-Phe-OH (CAS 13116-21-7)
- Darolutamide Impurity 32 (CAS CATO-C4X-310632)
- Rebamipide Impurity 41 (CAS CATO-C4X-152341)
- Varenicline Impurity 21 (CAS 328055-92-1)
- n-(2-Amino-2-phenylethyl)-2,5-dimethylthiophene-3-sulfonamide hydrochloride (CAS 1423034-67-6)
- 5,5-Dimethyl-3-((naphthalen-1-ylmethyl)sulfonyl)-4,5-dihydroisoxazole (CAS 834885-15-3)
- Tert-butyl 2-hydroxy-5-azaspiro[3.5]Nonane-5-carboxylate (CAS 1934510-39-0)
- Butyl 2,4-dichloro-6-(phenylthio)pyrimidine-5-carboxylate (CAS 87847-39-0)
- 4-[(3-Methoxybenzyl)oxy]piperidine hydrochloride (CAS 1220036-54-3)
- 4-Bromo-3-(oxazolo[4,5-b]pyridin-2-yl)aniline (CAS 64289-44-7)
- Biotinyl-Neuropeptide W-23 (human) (CAS 1815618-09-7)
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