Isosorbide Dinitrate Impurity 20 CAS 175220-76-5
| CAS No. | 175220-76-5 |
| Molecular Formula | C6H9NO5 |
| Molecular Weight | 175.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Isosorbide Dinitrate Impurity 20 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.
Isosorbide Dinitrate Impurity 20 (CAS 175220-76-5) is a certified pharmaceutical impurity reference standard with the molecular formula C6H9NO5 and a molecular weight of 175.14 g/mol.
Owing to a carbohydrate-derived structure, an amide group, Isosorbide Dinitrate Impurity 20 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 175.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C6H9NO5 |
| Molecular Weight | 175.14 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2007 |
| Nitrogen Atoms | 1 |
Related Isosorbide Standards
- Isosorbide Dinitrate 19 (CAS 1932354-37-4)
- Isosorbide Dimethyl Ether (CAS 5306-85-4)
- Isosorbide Impurity 21 (CAS 28218-55-5)
- Isosorbide Impurity 23 (CAS 45895-44-1)
- Isosorbide Impurity 24 (CAS 52485-66-2)
- Isosorbide Dinitrate Impurity 5 (CAS 13042-39-2)
- Isosorbide Dinitrate Impurity 6 (CAS 65940-93-4)
- Isosorbide Dinitrate Impurity 10 (CAS CATO-C4X-223810)
Recommended Standards
- N-Acetyl-L-Aspartic Acid (CAS 997-55-7)
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- 4-Chloro-N-(2-chloro-5-(trifluoromethyl)phenyl)benzamide (CAS 3847-67-4)
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- 3-((2-Chloropyridin-3-yl)amino)cyclohex-2-en-1-one (CAS 198141-10-5)
- Des-Asp15-Tirzepatide (CAS CATO-CPTD788958)
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