Quinapril ethyl ester maleic acid salt CAS 103733-36-4
| CAS No. | 103733-36-4 |
| Molecular Formula | C27H34N2O5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| 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 Quinapril ethyl ester maleic acid salt.
Quinapril ethyl ester maleic acid salt (CAS 103733-36-4), molecular formula C27H34N2O5C4H4O4 and molecular weight 582.65 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C27H34N2O5C4H4O4, Quinapril ethyl ester maleic acid salt contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 582.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Quinapril ethyl ester maleic acid salt 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 | C27H34N2O5 C4H4O4 |
| Molecular Weight | 582.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
Related Quinapril Standards
- Quinapril Bicyclic Acid Benzyl Ester (CAS 103733-30-8)
- Quinapril ethyl ester (CAS 103733-35-3)
- Quinapril EP Impurity D (CAS 103733-49-9)
- Quinapril EP Impurity I (CAS 103775-09-3)
- Quinapril EP Impurity G (CAS 103833-16-5)
- Quinapril EP Impurity C-d5 (CAS 1279034-23-9)
- Quinapril EP Impurity E (CAS 2055735-09-4)
- Quinapril EP Impurity A (CAS 74163-81-8)
Recommended Standards
- 1-(4-Phenyl-1,3-thiazol-2-yl)ethan-1-one (CAS 58351-05-6)
- 2-{[5-(2-methylphenoxymethyl)-4-phenyl-4h-1,2,4-triazol-3-yl]sulfanyl}acetic acid (CAS 131142-10-4)
- 5-chloro-2-piperazin-1-yl-1,3-benzoxazole,2HCl (CAS 1431966-42-5)
- 2,4-Dimethylfuro[3,2-c]quinoline-8-carboxylic acid (CAS 134204-97-0)
- 5-Amino-3-methylthiophene-2,4-dicarbonitrile (CAS 52603-48-2)
- Methyl 5-Bromo-3-(trifluoromethyl)pyridine-2-carboxylate (CAS 1214328-84-3)
- 3-Methyl-1-tosyl-1H-pyrazole (CAS 6126-11-0)
- 6-Fluoro-7-methylisoquinoline (CAS 918491-53-9)
- 2,4-Dichloro-7-methoxyquinazoline (CAS 62484-31-5)
- Peptide Impurity 82 (CAS 10491-78-8)
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