7-Chloro-6-fluoro-4-((3-phenylallylidene)amino)cinnoline-3-carboxylic acid CAS 159831-78-4
| CAS No. | 159831-78-4 |
| Molecular Formula | C18H11ClFN3O2 |
| Molecular Weight | 355.75 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7-Chloro-6-fluoro-4-((3-phenylallylidene)amino)cinnoline-3-carboxylic acid.
7-Chloro-6-fluoro-4-((3-phenylallylidene)amino)cinnoline-3-carboxylic acid (CAS 159831-78-4), molecular formula C18H11ClFN3O2 and molecular weight 355.75 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H11ClFN3O2, 7-Chloro-6-fluoro-4-((3-phenylallylidene)amino)cinnoline-3-carboxylic acid contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 355.75 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), 7-Chloro-6-fluoro-4-((3-phenylallylidene)amino)cinnoline-3-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 | C18H11ClFN3O2 |
| Molecular Weight | 355.75 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 3-(2-Chloro-6-fluorophenyl)-N-(2-cyanophenyl)-5-methylisoxazole-4-carboxamide (CAS 925036-67-5)
- (4-Chloro-phenyl)-(1-methyl-7-trifluoromethyl-2,3-dihydro-1H-pyrido[2,3-b]pyrazin-4-yl)-methanone (CAS 1311278-09-7)
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- 1-(4-Chloro-3-nitrophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264041-42-0)
- 1-(2-Chloro-5-nitrophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264046-78-7)
- 1-(2-Chloro-4-nitrophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264049-02-6)
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Recommended Standards
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- 3-(((4-Chlorophenyl)sulfonyl)methyl)-4-nitrobenzoic acid (CAS 339276-54-9)
- 4-((2,6-Dimethylcyclohexyl)amino)butan-2-ol (CAS 1340056-19-0)
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- Barium ((2R,3S,4S,5R)-3,4,5,6-tetrahydroxytetrahydro-2H-pyran-2-yl)methyl phosphate (CAS 58823-95-3)
- 3-(3,4,5-Trifluorophenyl)propiophenone (CAS 898777-56-5)
- 1-Chloro-2-(cyclopentyloxy)-4-(trifluoromethyl)benzene (CAS 1394990-57-8)
- CAS 6562-41-0 (CAS 6562-41-0)
- 1,4-Bis((2-chloro-4-methoxyphenoxy)methyl)benzene (CAS 146949-20-4)
- 2-(3-Methoxyphenyl)-1,3,2-dioxaborinane (CAS 416839-37-7)
- 3-Chloro-5-fluoroisonicotinaldehyde (CAS 1227603-79-3)
- (Glu1)-Fibrinopeptide B (human) (CAS 103213-49-6)
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