5,7-Dichloro-4-hydroxyquinoline-3-carboxylic acid CAS 171850-30-9
| CAS No. | 171850-30-9 |
| Molecular Formula | C10H5Cl2NO3 |
| Molecular Weight | 258.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5,7-Dichloro-4-hydroxyquinoline-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.
5,7-Dichloro-4-hydroxyquinoline-3-carboxylic acid (CAS 171850-30-9), molecular formula C10H5Cl2NO3 and molecular weight 258.06 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, chlorine substitution, 5,7-Dichloro-4-hydroxyquinoline-3-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 258.06 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C10H5Cl2NO3 |
| Molecular Weight | 258.06 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-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, 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.) | 2006 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 6,8-Dichloro-2-oxo-2H-chromene-3-carboxamide (CAS 101166-95-4)
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- 4-(4,6-Dichloro-1,3,5-triazin-2-yl)benzene-1,3-diol (CAS 150238-76-9)
- 2-(4,7-Dichloro-3-indolyl)-2-oxoacetic Acid (CAS 1514155-85-1)
- 4,5-Dichloro-1-(4-nitrophenyl)-1H-imidazole (CAS 649579-09-9)
- 5,8-Dichloro-4-hydroxyquinoline-3-carboxylic acid (CAS 35973-26-3)
- 6,7-Dichloro-4-hydroxyquinoline-3-carboxylic acid (CAS 26893-20-9)
- 6,7-Dichloro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 51726-82-0)
Recommended Standards
- 3-(3,5-Dichlorophenyl)-4-nitro-1H-pyrazole (CAS 1708380-52-2)
- 4-Bromo-1-(difluoromethyl)isoquinoline (CAS 1781746-05-1)
- 5-Chloro-2-(2-chlorophenyl)-2H-1,2,3-triazole-4-carboxylic acid (CAS 1707371-68-3)
- 3-Iodo-1-methyl-1H-pyrrolo[3,2-c]pyridine (CAS 1824051-84-4)
- 1-(3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)-N-methylmethanamine (CAS 937658-07-6)
- 5-(Bromomethyl)-3-ethoxy-4-methylisoxazole (CAS 194286-80-1)
- Methyl 8-bromo-2-naphthoate (CAS 168901-54-0)
- N-(4-(Dimethylamino)-2-morpholinopyrimidin-5-yl)butyramide (CAS 1797622-57-1)
- 3-(Pyridin-4-yl)cyclobutan-1-one (CAS 1211588-37-2)
- 4-(2-(Methylthio)ethyl)pyridine (CAS 124528-30-9)
- 8-Bromo-6-fluoro-1-methylquinoxaline-2,3(1H,4H)-dione (CAS 1845717-02-3)
- 3-(2-methoxyethyl)azepane (CAS 1566236-20-1)
- 4-Hydroxy-2'-methoxy-[1,1'-biphenyl]-3-carboxylic acid (CAS 400744-79-8)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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