(E)-3-nitrobenzaldehyde O-(2,6-difluorobenzoyl) oxime CAS 303987-13-5
| CAS No. | 303987-13-5 |
| Molecular Formula | C14H8F2N2O4 |
| Molecular Weight | 306.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(E)-3-nitrobenzaldehyde O-(2,6-difluorobenzoyl) oxime (CAS 303987-13-5), molecular formula C14H8F2N2O4 and molecular weight 306.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (E)-3-nitrobenzaldehyde O-(2,6-difluorobenzoyl) oxime (C14H8F2N2O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 306.22 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C14H8F2N2O4 |
| Molecular Weight | 306.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related E Standards
- (E)-3-nitrobenzaldehyde O-(4-chlorobenzoyl) oxime (CAS 341967-84-8)
- (E)-3-nitrobenzaldehyde O-((2-chlorothiazol-5-yl)methyl) oxime (CAS 341967-83-7)
- 3-Nitrobenzaldehyde O-(2,4-dichlorobenzyl) oxime (CAS 303987-32-8)
- (E)-3-nitrobenzaldehyde O-((3,4-dichlorophenyl)carbamoyl) oxime (CAS 39089-88-8)
- 3-Nitrobenzaldehyde O-((2-(3-chlorophenyl)oxazol-4-yl)methyl) oxime (CAS 1119372-92-7)
- 3-Nitrobenzaldehyde O-acetyl oxime (CAS 808101-24-8)
- 3-Acetyl-5-nitrobenzaldehyde (CAS 1393562-14-5)
- 4-Acetyl-2-nitrobenzaldehyde (CAS 933443-35-7)
Recommended Standards
- (E)-2-((2,6-Difluorophenyl)diazenyl)terephthalic acid (CAS 1848205-61-7)
- 1-((Methylsulfonyl)methyl)-3,5-bis(trifluoromethyl)benzene (CAS 261924-41-8)
- 4-Bromo-N-isopropyl-2,6-dimethylbenzenesulfonamide (CAS 1704097-43-7)
- 2-((3,4-Dihydroxybenzoyl)oxy)-4,6-dihydroxybenzoic Acid (CAS 30048-34-1)
- N-(4-phenylthiazol-2-yl)-2-(m-tolylthio)acetamide (CAS 338957-85-0)
- Sodium 1-Heptanesulfonate (CAS 22767-50-6)
- 7-Chloro-2-(4-ethoxyphenyl)-8-methylquinoline-4-carbonyl chloride (CAS 1160263-72-8)
- tert-Butyl (1-bromoisoquinolin-3-yl)carbamate (CAS 890843-29-5)
- N-(2-aminoethyl)-5-methylthiophene-2-sulfonamide (CAS 1018273-59-0)
- n-(3-Chlorophenyl)cycloheptanamine (CAS 1040021-93-9)
- 2-Methoxy-6-methylaniline (CAS 50868-73-0)
- N-(4-chlorophenyl)-2-isonicotinoylhydrazine-1-carbothioamide (CAS 74270-72-7)
- 1-cyclopropyl-2-(4-methylphenyl)ethan-1-one (CAS 56594-97-9)
- 3AEEA-Semaglutide(Endo-AEEA-Semaglutide) (CAS CATO-C4X-2226265)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com