4-Chloro-2-(ethylamino)benzoic acid CAS 26580-55-2
| CAS No. | 26580-55-2 |
| Molecular Formula | C9H10ClNO2 |
| Molecular Weight | 199.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 199.63 g/mol gives 4-Chloro-2-(ethylamino)benzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Chloro-2-(ethylamino)benzoic acid (CAS 26580-55-2), molecular formula C9H10ClNO2 and molecular weight 199.63 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Chloro-2-(ethylamino)benzoic acid (C9H10ClNO2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Chloro-2-(ethylamino)benzoic 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 | C9H10ClNO2 |
| Molecular Weight | 199.63 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 4-Chloro-1-ethyl-6-methyl-2-oxo-1,2-dihydropyridine-3-carbaldehyde (CAS 1018525-23-9)
- Ethyl 6-chloro-4-methylpyridine-2-carboxylate (CAS 1122090-50-9)
- 3-Chloro-1-(cyclopropylmethyl)-4-hydroxypyridin-2(1H)-one (CAS 1128149-77-8)
- Ethyl 4-chloro-6-methylnicotinate (CAS 1142188-94-0)
- 2-Chloro-5-((tetrahydrofuran-3-yl)oxy)pyridine (CAS 1204483-97-5)
- Ethyl 3-chloro-2-methylisonicotinate (CAS 1227603-49-7)
- 3-Chloro-5-hydroxy-N,N-dimethylbenzamide (CAS 1243279-42-6)
- 2-CHloro-4-hydroxy-n,n-dimethylbenzamide (CAS 1243310-69-1)
Recommended Standards
- 4-Chloro-2-(dimethylamino)benzoic acid (CAS 689147-76-0)
- 4-Chloro-2-hydroxy-N,N-dimethylbenzamide (CAS 898541-61-2)
- 4-(2-Chloroethoxy)benzamide (CAS 36616-30-5)
- 4-Chloro-3-(dimethylamino)benzoic acid (CAS 57489-56-2)
- 3-Fluoro-4-(tetrahydro-2H-pyran-2-ylmethoxy)-phenylamine 4044AF 946698-98-2 C12H16FNO2 (CAS 946698-98-2)
- (3-(Aminomethyl)phenyl)(imino)(methyl)-l6-sulfanone (dihydrochloride) (CAS 2408970-14-7)
- 2-(Difluoromethoxy)-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1445651-59-1)
- 4-Methoxy-3-nitrobenzene-1-sulfonamide (CAS 22939-93-1)
- 4-(Bromomethyl)-N,N-dimethylbenzamide (CAS 69449-20-3)
- 2-(3-(Trifluoromethyl)phenyl)malonaldehyde (CAS 493036-49-0)
- 1,2-Dibromo-3,5-difluoro-4-nitrobenzene (CAS 1803715-37-8)
- 1-Methyl-3-(prop-2-yn-1-yl)imidazolidin-2-one (CAS 131423-06-8)
- 9-Methoxy-2,3,4,6,7,11b-hexahydro-1H-pyrazino[2,1-a]isoquinoline (CAS 1082871-91-7)
- Liraglutide Sodium Salt (CAS 204656-20-2（free base）)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com