4-fluoro-1H-indole-7-carboxylic acid CAS 313337-34-7
| CAS No. | 313337-34-7 |
| Molecular Formula | C9H14FNO2 |
| Molecular Weight | 187.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-fluoro-1H-indole-7-carboxylic acid (CAS 313337-34-7), molecular formula C9H14FNO2 and molecular weight 187.21 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H14FNO2, 4-fluoro-1H-indole-7-carboxylic acid contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 187.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 4-fluoro-1H-indole-7-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H14FNO2 |
| Molecular Weight | 187.21 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 4-Fluoro-[1,1'-biphenyl]-3-amine (CAS 478403-55-3)
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- 5-(3-Fluorophenyl)-2-methylpyridine (CAS 713143-67-0)
- 4,6-Dimethoxy-3-methyl-2-pentylbenzofuran (CAS 831171-01-8)
- 2-methylpyrimidine-4-carbaldehyde (CAS 1004-17-7)
- 2-(4-(Benzyloxy)-5-methoxy-2-nitrophenyl)acetic acid (CAS 92964-17-5)
- 4-Iodo-1H-imidazole-5-carbonitrile (CAS 132252-43-8)
- (<I>S</I>,<I>R</I>,<I>S</I>)-AHPC-PEG<SUB>3</SUB>-azide (CAS 1797406-80-4)
- 1-(4-Methoxyphenyl)-1h-pyrrole-3-carbaldehyde (CAS 88075-92-7)
- 3-(4-Methoxyphenyl)-7-(trifluoromethyl)-1H-indazole (CAS 680611-14-7)
- 4-(Isopropylsulfonyl)cyclohexan-1-amine (CAS 1341107-05-8)
- 5-(Pyrimidin-5-yl)nicotinamide (CAS 1346687-33-9)
- Des-[Gly]31-Semaglutide(x TFA Salt) (CAS 873874-39-6(free base))
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