Irbesartan Impurity 9 CAS 1213252-83-5
| CAS No. | 1213252-83-5 |
| Molecular Formula | C25H26N6O |
| Molecular Weight | 426.51 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Irbesartan Impurity 9 (CAS 1213252-83-5), a pharmacopoeial impurity reference standard (molecular formula C25H26N6O, MW 426.51 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Irbesartan Impurity 9 (C25H26N6O) 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 the protonation state of its nitrogen-containing groups, 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.
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 | C25H26N6O |
| Molecular Weight | 426.51 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 6 |
Related Irbesartan Standards
Recommended Standards
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- N-(3-Aminophenyl)-4-(sec-butoxy)benzamide (CAS 1020054-49-2)
- 1-(2-Methoxyethyl)-5-oxopyrrolidine-3-carboximidamide hydrochloride (CAS 1272756-21-4)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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