9,10-Difluoro-2,3-dihydro-2-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid CAS 107358-77-0
| CAS No. | 107358-77-0 |
| Molecular Formula | C13H9F2NO4 |
| Molecular Weight | 281.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 281.21 g/mol gives 9,10-Difluoro-2,3-dihydro-2-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
9,10-Difluoro-2,3-dihydro-2-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid (CAS 107358-77-0), molecular formula C13H9F2NO4 and molecular weight 281.21 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H9F2NO4, 9,10-Difluoro-2,3-dihydro-2-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, 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 281.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C13H9F2NO4 |
| Molecular Weight | 281.21 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, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 5-Fluoro-1-(4-hydroxy-3-nitrobenzyl)pyrimidine-2,4(1H,3H)-dione (CAS 85093-36-3)
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- 2-(6-Fluoropyridin-3-yl)-6-(trifluoromethyl)-1H-benzo[d]imidazole (CAS 1356385-98-2)
- 3-Amino-3-(3-(1,1,2,2-tetrafluoroethoxy)phenyl)propanoic acid (CAS 773122-81-9)
- Pcb No. 26 (CAS 38444-81-4)
- 4-(Bromomethyl)-2-(trifluoromethyl)thiazole hydrobromide (CAS 2089325-69-7)
- 2,5-Dioxopyrrolidin-1-yl cyclopentanecarboxylate (CAS 51871-58-0)
- 1,3-Diisopropoxycalix[4]arenecrown-6 (CAS 161282-96-8)
- 2-(2-Chloropyridin-4-yl)-5-(trifluoromethyl)benzo[d]oxazole (CAS 1192019-08-1)
- 4,4-Dihexyl-2,6-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4H-silolo[3,2-b:4,5-b']dithiophene (CAS 1445594-20-6)
- Biperiden Lactate (CAS 7085-45-2)
- 4-(6-Methoxy-2H-chromen-3-yl)-2-methyl-5-oxo-5H-indeno[1,2-b]pyridine-3-carbonitrile (CAS 866145-00-8)
- N-(oxolan-2-ylmethylidene)hydroxylamine (CAS 23247-31-6)
- Serpent Peptide (CAS 823202-99-9)
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