3-(3-Chlorophenyl)-1,2,4-oxadiazole-5-carboxylic acid CAS 944896-63-3
| CAS No. | 944896-63-3 |
| Molecular Formula | C9H5ClN2O3 |
| Molecular Weight | 224.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-(3-Chlorophenyl)-1,2,4-oxadiazole-5-carboxylic acid (CAS 944896-63-3), a certified reference material (molecular formula C9H5ClN2O3, MW 224.60 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 3-(3-Chlorophenyl)-1,2,4-oxadiazole-5-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 224.60 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.
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 | C9H5ClN2O3 |
| Molecular Weight | 224.60 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 5-(2-Chlorophenyl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 1260740-15-5)
- 5-(3-Chlorophenyl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 1260774-15-9)
- 2-(2-Chlorophenyl)-2H-tetrazole-5-carboxylic acid (CAS 1368525-24-9)
- 5-(4-Chlorophenyl)-1,3,4-oxadiazole-2-carboxylic acid (CAS 187999-13-9)
- 5-(4-Chlorophenyl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 187999-16-2)
- 3-(4-chlorophenyl)-1,1,1-trifluoropropan-2-ol (CAS 1148050-25-2)
- 1-(4-Chlorophenyl)-3,3,3-trifluoropropan-1-ol (CAS 1247704-68-2)
- 3-(2-Chlorophenyl)-1,1,1-trifluoropropan-2-ol (CAS 1341685-58-2)
Recommended Standards
- 2-chloro-4-(1H-1,2,3,4-tetrazol-1-yl)benzoic acid (CAS 309720-72-7)
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- 2-(3-Chloro-1H-1,2,4-triazol-1-yl)isonicotinic acid (CAS 2090414-76-7)
- 3-Chloro-7-nitroquinoxalin-2-amine (CAS 251537-40-3)
- 3-Chloro-2,2-dimethyl-N-((1-methyl-5-morpholino-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl)propanamide (CAS 956739-21-2)
- 1-Bromo-2-ethynyl-3-methoxybenzene (CAS 2196194-31-5)
- methyl N-(2-amino-1,2-dicyanoeth-1-en-1-yl)methanecarboximidate (CAS 123060-28-6)
- 1-(4-aminophenyl)methanesulfonamide (CAS 4403-84-3)
- 7-(4-Chlorophenyl)-2-(trichloromethyl)-[1,2,4]triazolo[1,5-a]pyridine-8-carbonitrile (CAS 866050-16-0)
- (4-(Hydroxymethyl)piperidin-1-yl)(pyridin-2-yl)methanone (CAS 1183625-37-7)
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- Emoxypine Succinate (CAS 127464-43-1)
- 1-methyl5-chloroimidazolenitrate (CAS 4531-53-7)
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