Quinapril EP Impurity C-d5 CAS 1279034-23-9
| CAS No. | 1279034-23-9 |
| Molecular Formula | - |
| Molecular Weight | 415.49 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 Quinapril EP Impurity C-d5 (CAS 1279034-23-9), a pharmacopoeial impurity reference standard (molecular formula C23H21D5N2O5, MW 415.49 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to deuterium isotope labeling, a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Quinapril EP Impurity C-d5 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 415.49 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C23H21D5N2O5 |
| Molecular Weight | 415.49 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) | 14.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 2 |
Related Quinapril Standards
- Quinapril EP Impurity D (CAS 103733-49-9)
- Quinapril EP Impurity C (CAS 82768-85-2)
- Quinapril impurity 3 (CAS CATO-C4X-17413)
- Quinapril EP Impurity I (CAS 103775-09-3)
- Quinapril EP Impurity G (CAS 103833-16-5)
- Quinapril (CAS 85441-61-8)
- Quinapril EP Impurity E (CAS 2055735-09-4)
- Quinapril Isopropyl Ester Analog (CAS 955034-25-0)
Recommended Standards
- 3-(4-(Piperidin-1-yl)-[1,2,4]triazolo[4,3-a]quinoxalin-1-yl)-N-(pyridin-3-ylmethyl)propanamide (CAS 1189972-49-3)
- N-([1,1-Biphenyl]-4-ylmethyl)-6-phenyl-3-(pyridin-2-yl)-1,2,4-triazin-5-amine (CAS 1357171-62-0)
- Fmoc-L-2,4-Dimethylphe (CAS 1217728-65-8)
- N-Cyclohexyl-2-[4-(5-ethyl-1,2,4-oxadiazol-3-yl)-1,3-dioxo-1H,2H,3H,5H,6H,7H,8H,9H-pyrimido[1,6-a]azepin-2-yl]acetamide (CAS 1775350-76-9)
- Voriconazole Impurity 87 (CAS CATO-C4X-136687)
- N2,N4-Di-Nitroso Moxifloxacin Impurity 154 (CAS CATO-C4X-1074154)
- Mivacurium Chloride Impurity 13 (CAS 161816-39-3)
- methyl 3-[(3-nitropyridin-2-yl)amino]propanoate (CAS 1183435-02-0)
- Lornoxicam Impurity 20 (CAS 54166-60-8)
- 3-((2,4-Dichlorobenzyl)oxy)benzo[b]thiophene-2-carbonitrile (CAS 303985-57-1)
- 2-(Chloromethyl)-1,4,8-trioxaspiro[4.5]decane (CAS 1551315-59-3)
- Methyl 2-(3-hydroxypiperidin-4-yl)acetate (CAS 1782591-91-6)
- 3-oxo-5-(trifluoromethyl)cyclohexane-1-carboxylic acid (CAS 1923335-26-5)
- Valosin Peptide (VQY), porcine (CAS 99510-37-9)
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