Diethyl 5-oxoazepane-1,4-dicarboxylate CAS 19786-58-4
| CAS No. | 19786-58-4 |
| Molecular Formula | C12H19NO5 |
| Molecular Weight | 257.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Diethyl 5-oxoazepane-1,4-dicarboxylate (C12H19NO5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Diethyl 5-oxoazepane-1,4-dicarboxylate (CAS 19786-58-4) is a high-purity analytical reference standard with the molecular formula C12H19NO5 and a molecular weight of 257.28 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C12H19NO5 |
| Molecular Weight | 257.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- Carglumic Acid impurity 02 (CAS 196394-49-7)
- ((1,1-Dioxidotetrahydrothiophen-3-yl)sulfonyl)glycine (CAS 926248-43-3)
- Carglumic Acid impurity 03 (CAS 196394-48-6)
- (1S,3R)-3-((tert-butoxycarbonyl)amino)-5-oxocyclohexane-1-carboxylic acid (CAS 2227198-39-0)
- 4-Amino-6-chloro-5-iodo-2-methylpyridazin-3(2H)-one (CAS 1445994-01-3)
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- C13-112-tetra-tail (CAS 1381861-92-2)
- 2-Benzyl-5-bromophenol (CAS CATO-C4X-294310)
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- 4-bromo-1-vinyl-1h-pyraZole (CAS 80308-80-1)
- 5-Bromo-2,5-dihydrofuran-2-one (CAS 40125-53-9)
- 2-(3-Methyl-1H-pyrazol-1-yl)propanamide (CAS 1171977-37-9)
- Liraglutide Impurity 5 TFA Salt (CAS CATO-C4X-19925)
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