(S)-N-(1-phenylethyl)hydroxylamine oxalate CAS 78798-33-1
| CAS No. | 78798-33-1 |
| Molecular Formula | C8H11NO |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-N-(1-phenylethyl)hydroxylamine oxalate (CAS 78798-33-1), molecular formula C8H11NOC2H2O4 and molecular weight 227.22 g/mol, is a CATO reference standard with documented purity and traceability.
(S)-N-(1-phenylethyl)hydroxylamine oxalate (C8H11NOC2H2O4) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C8H11NO C2H2O4 |
| Molecular Weight | 227.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 1 |
Recommended Standards
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- (4r)-6-Ethyl-3,4-dihydro-2h-1-benzopyran-4-ol (CAS 1461689-21-3)
- 1-Bromo-2,3-dimethylpentane (CAS 7485-44-1)
- N,N-Dimethyl-N′-2-propen-1-ylsulfamide (CAS 98139-54-9)
- 5,7-Dichloro-2-propylquinolin-4-amine (CAS 1189106-39-5)
- methyl 4-[3-[tert-butoxycarbonyl-(tert-butoxycarbonylamino)amino]-1-bicyclo[1.1.1]pentanyl]benzoate (CAS 2149634-56-8)
- Fibrinogen-Binding Peptide (CAS 137235-80-4)
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