(2E)-N-(5-fluoro-2-methylphenyl)-2-(N-hydroxyimino)acetamide CAS 876395-72-1
| CAS No. | 876395-72-1 |
| Molecular Formula | C9H9FN2O2 |
| Molecular Weight | 196.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 196.18 g/mol gives (2E)-N-(5-fluoro-2-methylphenyl)-2-(N-hydroxyimino)acetamide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(2E)-N-(5-fluoro-2-methylphenyl)-2-(N-hydroxyimino)acetamide (CAS 876395-72-1), molecular formula C9H9FN2O2 and molecular weight 196.18 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (2E)-N-(5-fluoro-2-methylphenyl)-2-(N-hydroxyimino)acetamide (C9H9FN2O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C9H9FN2O2 |
| Molecular Weight | 196.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 6-Fluoro-7-hydroxy-3,4-dihydro-1H-benzo[e][1,4]diazepin-5(2H)-one (CAS 1956319-16-6)
- (E)-3-(2-Fluoro-4-methoxyphenyl)acrylic acid (CAS 696589-22-7)
- 2-Oxopropyl 4-fluorobenzoate (CAS 1943701-17-4)
- (E)-3-(2-fluoro-5-methoxyphenyl)acrylic acid (CAS 476199-05-0)
- 5-(Hydroxymethyl)-2-methyl-4-((2-phenylhydrazono)methyl)pyridin-3-ol (CAS 57755-34-7)
- 3-(5-Fluoro-2-methylphenyl)-1-methyl-1h-pyrazol-5-amine (CAS 1342961-62-9)
- 2,4,5-Trichloro-N-(1-(4-methoxybenzyl)-5,6-dimethyl-1H-benzo[d]imidazol-4-yl)benzenesulfonamide (CAS 338954-96-4)
- Ethyl 4-Methylpiperidine-4-carboxylate Hydrochloride (CAS 225240-71-1)
- (4-Amino-2-chloro-5-iodophenyl)methanol (CAS 1807756-83-7)
- 2-(2-Chloro-1h-benzimidazol-1-yl)-1-phenylethanone (CAS 23085-45-2)
- 7-Iodoquinolin-5-ol (CAS 1261558-03-5)
- 2,3,4,4a,5,9b-hexahydroindeno[1,2-b][1,4]oxazine;hydrochloride (CAS 36095-83-7)
- 2-Chloro-1-ethoxy-3-methoxybenzene (CAS 1881331-12-9)
- Semaglutide impurity 67 (CAS CATO-C4X-222667)
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