5-Methylquinoline-8-carboxylic acid CAS 70585-51-2
| CAS No. | 70585-51-2 |
| Molecular Formula | C11H9NO2 |
| Molecular Weight | 187.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Methylquinoline-8-carboxylic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-Methylquinoline-8-carboxylic acid (CAS 70585-51-2), a certified reference material (molecular formula C11H9NO2, MW 187.19 g/mol) for analytical method development and quality control.
The molecular framework of 5-Methylquinoline-8-carboxylic acid (C11H9NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H9NO2 |
| Molecular Weight | 187.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
Related Methylquinoline Standards
- 7-Methylquinoline-5-carboxylic acid (CAS 1016257-78-5)
- 5-Methylquinoline-2-carboxylic acid (CAS 103856-59-3)
- 4-Methylquinoline-3-carboxylic acid (CAS 103907-10-4)
- 6-Methylquinoline-5-carboxylic acid (CAS 1211488-26-4)
- 5-Methylquinoline-4-carboxylic acid (CAS 1474034-01-9)
- 6-Methylquinoline-2-carboxylic acid (CAS 15733-84-3)
- 3-Methylquinoline-4-carboxylic acid (CAS 1873-51-4)
- 4-Methylquinoline-5-carboxylic acid (CAS 1935554-00-9)
Recommended Standards
- 5-Methyl-5H-furo[2,3-f]indol-6(7H)-one (CAS 851682-16-1)
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- 5-Methyl-3-phenyl-4-isoxazolecarbaldehyde (CAS 87967-95-1)
- 6-Acetylquinolin-4(1H)-one (CAS 97545-53-4)
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- Decane-1,2,9,10-tetraol (CAS 69380-67-2)
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