N,N-dimethyl-4-oxo-3-(3-(trifluoromethyl)phenyl)-3,4-dihydrophthalazine-1-carboxamide CAS 338975-89-6
| CAS No. | 338975-89-6 |
| Molecular Formula | C18H14F3N3O2 |
| Molecular Weight | 361.32 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.
N,N-dimethyl-4-oxo-3-(3-(trifluoromethyl)phenyl)-3,4-dihydrophthalazine-1-carboxamide (CAS 338975-89-6), molecular formula C18H14F3N3O2 and molecular weight 361.32 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H14F3N3O2, N,N-dimethyl-4-oxo-3-(3-(trifluoromethyl)phenyl)-3,4-dihydrophthalazine-1-carboxamide contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 361.32 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.
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 | C18H14F3N3O2 |
| Molecular Weight | 361.32 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Recommended Standards
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- N-(2,4-Difluorophenyl)-2-(4-nitrophenyl)-1,3-thiazole-4-carboxamide (CAS 400080-65-1)
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- 2-Bromo-6-(trifluoromethyl)aniline (CAS 58458-13-2)
- 4-(4-Bromo-3-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 1440535-69-2)
- 6-Methoxynaphthalene-1-sulfonyl chloride (CAS 66413-57-8)
- Drospirenone-20,20,21,21-d4 (CAS 2376035-94-6)
- 2-(5-Methyl-1,3,4-oxadiazol-2-yl)benzoic acid (CAS 898289-64-0)
- 4,5-Dichloro-3-propoxythiophene-2-carboxylic acid (CAS 1708079-53-1)
- Acotiamide Impurity 35 (CAS CATO-C4X-111435)
- (S)-3-Ethyl-5-(hydroxymethyl)oxazolidin-2-one (CAS 637343-47-6)
- 1-(7-(Furan-2-yl)-1,4-thiazepan-4-yl)pent-4-en-1-one (CAS 1704634-19-4)
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