2-(5-Ethylthiophen-2-yl)-7,8-dimethylquinoline-4-carboxylic acid CAS 895966-56-0
| CAS No. | 895966-56-0 |
| Molecular Formula | C18H17NO2S |
| Molecular Weight | 311.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(5-Ethylthiophen-2-yl)-7,8-dimethylquinoline-4-carboxylic acid (C18H17NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 2-(5-Ethylthiophen-2-yl)-7,8-dimethylquinoline-4-carboxylic acid (CAS 895966-56-0), a certified reference material (molecular formula C18H17NO2S, MW 311.40 g/mol) for analytical method development and quality control.
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), 2-(5-Ethylthiophen-2-yl)-7,8-dimethylquinoline-4-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 | C18H17NO2S |
| Molecular Weight | 311.40 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Ethylthiophen Standards
- 2-(5-Ethylthiophen-2-yl)-6,8-dimethylquinoline-4-carboxylic acid (CAS 438230-08-1)
- 2-(5-Ethylthiophen-2-yl)-6-methylquinoline-4-carboxylic acid (CAS 438216-59-2)
- 4-((5-Ethylthiophen-2-yl)sulfonyl)-2-phenylmorpholine (CAS 946292-18-8)
- 2-(5-Ethylthiophen-2-yl)quinoline-4-carboxylic acid (CAS 351983-35-2)
- 5-(5-Ethylthiophen-2-yl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 676624-08-1)
- 3-(1-((5-Ethylthiophen-2-yl)sulfonyl)azetidin-3-yl)thiazolidine-2,4-dione (CAS 1795086-00-8)
- 1-(5-Ethylthiophen-2-yl)-2-(4-nitro-1h-imidazol-1-yl)ethan-1-one (CAS 1197967-97-7)
- 5-(5-Ethylthiophen-2-yl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-2-carbonyl chloride (CAS 863190-20-9)
Recommended Standards
- 2-(Benzo[d]thiazol-2-yl)-N,N-diethylnicotinamide (CAS 873856-45-2)
- 2-((6,7-Dimethyl-2-phenyl-1H-indol-3-yl)thio)acetic acid (CAS 62663-17-6)
- 2-(Benzylamino)-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3h)-one (CAS 66607-49-6)
- 2-((5,7-Dimethyl-2-phenyl-1H-indol-3-yl)thio)acetic acid (CAS 62663-19-8)
- 2-Amino-8-methyl-[1,2,4]triazolo[1,5-a]pyridine (CAS 1239648-74-8)
- n-{2-[4-(2-chloroacetyl)phenyl]ethyl}methanesulfonamide (CAS 875159-59-4)
- (2E,4E)-3-Methyl-5-(4-hydroxy-2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadienenitrile (CAS 178938-94-8)
- ethyl 5-amino-1-benzyl-1H-pyrazole-4-carboxylate (CAS 19867-62-0)
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