Enalapril EP Impurity B CAS 82717-96-2
| CAS No. | 82717-96-2 |
| Molecular Formula | C15H21NO4 |
| Molecular Weight | 279.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Enalapril EP Impurity B (CAS 82717-96-2) is a certified pharmaceutical impurity reference standard with the molecular formula C15H21NO4 and a molecular weight of 279.33 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Enalapril EP Impurity B is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 279.33 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.
As a certified reference material (CRM), Enalapril EP Impurity B 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.
Physical & Chemical Properties
| Molecular Formula | C15H21NO4 |
| Molecular Weight | 279.33 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 1 |
Related Enalapril Standards
- Enalapril EP Impurity G (CAS 460720-14-3)
- Enalapril Impurity 10 (CAS 32315-10-9)
- Enalapril Impurity 13 (CAS 84793-24-8)
- Enalapril-d3DISCONTINUED. Please see E555258 and E555252 (CAS 1356847-94-3)
- Enalapril Maleate Impurity 28 (CAS CATO-C4X-133428)
- Enalapril Impurity 14 (Bis(2-chloroethyl)-Butanedioate) (CAS 925-17-7)
- Enalapril Diketopiperazine Acid (R-Isomer) (CAS 219677-80-2)
- Enalapril Maleate Impurity 26 (CAS 115623-21-7)
Recommended Standards
- pregabalin Impurity 69 (CAS 1786719-42-3)
- Ramipril Impurity 4 (CAS 122076-80-6)
- Pregabalin Impurity 102 (CAS CATO-C4X-1312102)
- Ramipril Impurity 5 (CAS 84324-12-9)
- Celecoxib Impurity 69 (CAS 36201-04-4)
- Phenylephrine Impurity 18 (Mixture of Diastereomers) (CAS 1217525-08-0)
- Faropenem Impurity 60 (CAS CATO-C4X-128960)
- Methyl 2-(6-methyl-4-oxo-2-sulfanylidene-1,2,3,4-tetrahydropyrimidin-5-yl)acetate (CAS 162498-44-4)
- 1-(2,4-Difluoro-5-(trifluoromethyl)phenyl)ethan-1-one (CAS 1288987-92-7)
- (S)-Benzyl 2-(2-amino-3-phenylpropanoyl)hydrazinecarboxylate 2,2,2-trifluoroacetate (CAS 19046-94-7)
- (6-Chloro-5-(difluoromethyl)-4-methylpyridin-2-yl)methanol (CAS 1807090-17-0)
- 9,10-Dihydro-5-methoxy-9-oxo-4-acridinecarboxylic Acid (CAS 88377-31-5)
- 1-Boc-Isonipecotic acid hydrazide (CAS 187834-88-4)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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