6-Bromo-1-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylic acid CAS 1120249-21-9
| CAS No. | 1120249-21-9 |
| Molecular Formula | C11H8BrNO3 |
| Molecular Weight | 282.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 6-Bromo-1-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
6-Bromo-1-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylic acid (CAS 1120249-21-9), molecular formula C11H8BrNO3 and molecular weight 282.09 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution, 6-Bromo-1-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 282.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures 6-Bromo-1-methyl-2-oxo-1,2-dihydroquinoline-4-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H8BrNO3 |
| Molecular Weight | 282.09 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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, ethanol, DMSO |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Bromo Standards
- 4-Bromo-8-methoxyquinoline-2-carboxylic acid (CAS 103862-09-5)
- Methyl 4-bromo-3-formyl-1H-indole-2-carboxylate (CAS 1079252-75-7)
- Methyl 6-bromo-4-hydroxyquinoline-8-carboxylate (CAS 1190198-14-1)
- 2-(6-Bromo-4-oxoquinolin-1(4H)-yl)acetic acid (CAS 1216901-25-5)
- Methyl 4-bromo-1-oxo-1,2-dihydroisoquinoline-3-carboxylate (CAS 1220959-04-5)
- 4-Bromo-N-(3-methyl-1,2,4-oxadiazol-5-yl)benzamide (CAS 1222988-84-2)
- Methyl 2-(4-bromo-1H-pyrazol-1-yl)isonicotinate (CAS 1227954-81-5)
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Recommended Standards
- 1-Allyl-6-bromo-1H-benzo[d][1,3]oxazine-2,4-dione (CAS 1131587-69-3)
- Methyl 5-(2-bromophenyl)-1,2-oxazole-3-carboxylate (CAS 1053657-05-8)
- 2-(2-Bromophenyl)-5-methyloxazole-4-carboxylic acid (CAS 1140626-84-1)
- 4-Acetyl-2,5-difluorobenzeneboronic acid pinacol ester, 97% (CAS 1022154-80-8)
- 5-Methylpyridine-2-boronic acid, mono-lithium salt (CAS 1072946-48-5)
- 2-Phenyl-3-(piperazin-1-ylmethyl)imidazo[1,2-a]pyridine oxalate (CAS 1197230-74-2)
- (4-Fluoro-6-methoxypyridin-3-yl)boronic acid (CAS 2225180-40-3)
- 2,6-Dichloro-4-(methylthio)benzaldehyde (CAS 616196-04-4)
- 2-(4-Boc-piperazino)pyrimidine-5-boronic acid pinacol ester (CAS 940284-98-0)
- H-Glu-βNA (CAS 635-86-9)
- 2,5-Difluoro-4-nitrophenacyl chloride (CAS 1806333-93-6)
- 3-(4-Bromophenyl)-2-chloro-6-(trifluoromethoxy)quinoline (CAS 1204996-85-9)
- (3AR,4s,9bs)-6,9-dimethyl-3a,4,5,9b-tetrahydro-3h-cyclopenta[c]quinoline-4-carboxylic acid (CAS 1415811-56-1)
- Des-Tyr10-Tirzepatide (CAS CATO-CPTD788680)
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