4-fluoro-6-[(hydroxyamino)methylidene]cyclohexa-2,4-dien-1-one 91407-40-8 CAS 91407-40-8
| CAS No. | 91407-40-8 |
| Molecular Formula | C7H6FNO2 |
| Molecular Weight | 155.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-fluoro-6-[(hydroxyamino)methylidene]cyclohexa-2,4-dien-1-one 91407-40-8 (CAS 91407-40-8), molecular formula C7H6FNO2 and molecular weight 155.13 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, 4-fluoro-6-[(hydroxyamino)methylidene]cyclohexa-2,4-dien-1-one 91407-40-8 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 155.13 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H6FNO2 |
| Molecular Weight | 155.13 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 2-FLUORO-6-METHYLPYRIDINE-5-CARBOXYLIC ACID 2-METHYL-6-FLUORO-3-NICOTINIC ACID 3-PYRIDINECARBOXYLIC ACID, 6-FLUORO-2-METHYL- 6-FLUORO-2-METHYL-3-PYRIDINECARBOXYLIC ACID 6-FLUORO-2-METHYLNICOTINIC ACID 6-FLUORO-2-METHYLPYRIDINE-3-CARBOXYLIC ACID 884494-97-7 ABBYPHARMA AP-15-5904 YF10007 (CAS 884494-97-7)
- 4-Fluoroanthranilic Acid (CAS 446-32-2)
- 2-Amino-5-fluorobenzoic acid (CAS 446-08-2)
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- trans-4-(4-n-Pentylbenzoyl)cyclohexane-1-carboxylic acid (CAS 736136-21-3)
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