Azilsartan Impurity 51 CAS 139481-38-2
| CAS No. | 139481-38-2 |
| Molecular Formula | C27H25N3O6 |
| Molecular Weight | 487.50 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 487.50 g/mol gives Azilsartan Impurity 51 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Azilsartan Impurity 51 (CAS 139481-38-2), a pharmacopoeial impurity reference standard (molecular formula C27H25N3O6, MW 487.50 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Azilsartan Impurity 51 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 487.50 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C27H25N3O6 |
| Molecular Weight | 487.50 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 3 |
Related Azilsartan Standards
- Azilsartan Impurity 94 (CAS 2839197-75-8)
- Azilsartan Impurity 87 (CAS CATO-C4X-109687)
- Azilsartan Ethyl Ester Impurity (CAS 1403474-70-3)
- Azilsartan Impurity 39 (CAS CATO-C4X-109639)
- Azilsartan Impurity 120 (CAS CATO-C4X-1096120)
- Azilsartan Impurity 119 (CAS CATO-C4X-1096119)
- Azilsartan Impurity 93 (CAS 1800532-35-7)
- Azilsartan Impurity 126 (CAS 1604812-36-3)
Recommended Standards
- rel-N-[3,5-Bis(trifluoromethyl)phenyl]-N'-[(1S,2S)-2-(1,3-dihydro-2H-isoindol-2-yl)cyclohexyl]thiourea (CAS 2209086-51-9)
- Minocycline Impurity 54 (CAS CATO-C4X-169954)
- N-[3,5-Bis(trifluoromethyl)phenyl]-N'-[(1R,2R)-2-(1,3-dihydro-2H-isoindol-2-yl)cyclohexyl]thiourea (CAS 620960-27-2)
- Minocycline EP Impurity F (CAS 1075240-33-3)
- Rocuronium Bromide Impurity 24 (CAS 119302-19-1)
- Canagliflozin Impurity 42 (CAS CATO-C4X-112342)
- Tegoprazan Impurity 66 (CAS CATO-C4X-229766)
- 2-(Aminomethyl)-3-bromo-6-(difluoromethyl)pyridine-5-acetonitrile (CAS 1805450-83-2)
- 3-(Methylsulfinyl)benzaldehyde (CAS 724452-13-5)
- Tristearin-1,1,1-13C3 (CAS 287100-84-9)
- 2-[4-(Hydroxymethyl)phenoxy]-n-(4-methylphenyl)acetamide (CAS 693822-38-7)
- H-Lys(ivdde)-OH (CAS 919281-76-8)
- 5-Chloro-6-(chloroacetyl)-1,3-dimethyl-1,3-dihydro-2H-benzimidazol-2-one (CAS 897545-85-6)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com