1,3-Dioxo-2-[3-(trifluoromethyl)phenyl]-isoindoline-5-carboxylic acid CAS 328555-35-7
| CAS No. | 328555-35-7 |
| Molecular Formula | C16H8F3NO4 |
| Molecular Weight | 335.23 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.
1,3-Dioxo-2-[3-(trifluoromethyl)phenyl]-isoindoline-5-carboxylic acid (CAS 328555-35-7), molecular formula C16H8F3NO4 and molecular weight 335.23 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,3-Dioxo-2-[3-(trifluoromethyl)phenyl]-isoindoline-5-carboxylic acid (C16H8F3NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 335.23 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C16H8F3NO4 |
| Molecular Weight | 335.23 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 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- (4-(3,4-Dichlorophenyl)piperazin-1-yl)(phenyl)methanone (CAS 866150-40-5)
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- 2,4-Dichloro-N-[4-(pyrrolidin-1-yl)phenyl]benzamide (CAS 251097-22-0)
- 4-(3-Bromophenyl)-N-(2-methoxyphenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxamide (CAS 493017-13-3)
- Lesinurad Impurity 32 (CAS 1158970-37-6)
- 4-(1h-1,2,3,4-Tetrazol-5-yl)oxan-4-amine (CAS 1248180-39-3)
- 1-Bromo-4-(tert-butyl)-2-cyclopropoxybenzene (CAS 1243470-96-3)
- 1-Isobutyl-2-isopropyl-1H-imidazole (CAS 261523-33-5)
- 5-Methyl-2-(3-methyl-4-nitrophenyl)-1H-pyrazol-3(2H)-one (CAS 648917-71-9)
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- (2R,5S)-1-(Chlorocarbonyl)-5-ethylpyrrolidine-2-carboxylic acid (CAS 87251-08-9)
- Losartan Impurity N2 (CAS 1351793-76-4)
- Tau Peptide (298-312) trifluoroacetate salt (CAS 330456-47-8)
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