Sodium 4-fluoro-3-iodobenzoate CAS 499-62-7
| CAS No. | 499-62-7 |
| Molecular Formula | C7H3FIO2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Sodium 4-fluoro-3-iodobenzoate (CAS 499-62-7), molecular formula C7H3FIO2Na and molecular weight 287.99 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a salt form, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/iodine substitution, an aromatic ring system, Sodium 4-fluoro-3-iodobenzoate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 287.99 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).
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 | C7H3FIO2 Na |
| Molecular Weight | 287.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F/I-containing |
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Recommended Standards
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- 4,4,5,5-Tetramethyl-2-(2-(trifluoromethyl)thiophen-3-yl)-1,3,2-dioxaborolane (CAS 2246611-07-2)
- N,N-Dimethyl-N-(3-(trimethoxysilyl)propyl)tetradecan-1-aminium chloride (CAS 41591-87-1)
- 5-(Thiophen-3-yl)isophthalaldehyde (CAS 2289758-96-7)
- 2-Hydrazino-5-(methylsulfonyl)pyridine (CAS 343629-61-8)
- (Z)-Ethyl 3-(1-cyano-2-ethoxy-2-oxoethylidene)-cyclohexanecarboxylate (CAS 56975-25-8)
- 2-(4-Chlorobenzyl)-6,7-dihydro-5H-thiazolo[3,2-a]pyrimidin-3(2H)-one (CAS 1049144-05-9)
- DOHA-Fm (CAS 1040404-88-3)
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