3-(2,4-Dichlorobenzamido)-4-methylthiophene-2-carboxylic acid CAS 866151-45-3
| CAS No. | 866151-45-3 |
| Molecular Formula | C13H9Cl2NO3S |
| Molecular Weight | 330.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(2,4-Dichlorobenzamido)-4-methylthiophene-2-carboxylic acid (C13H9Cl2NO3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies 3-(2,4-Dichlorobenzamido)-4-methylthiophene-2-carboxylic acid (CAS 866151-45-3), a certified reference material (molecular formula C13H9Cl2NO3S, MW 330.19 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), 3-(2,4-Dichlorobenzamido)-4-methylthiophene-2-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.
Physical & Chemical Properties
| Molecular Formula | C13H9Cl2NO3S |
| Molecular Weight | 330.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dichlorobenzamido Standards
- 3-(2,6-Dichlorobenzamido)-4-methylthiophene-2-carboxylic acid (CAS 866152-24-1)
- 1-(2,6-Dichlorobenzamido)cycloheptane-1-carboxylic acid (CAS 912763-77-0)
- 4-(3,4-Dichlorobenzamido)-2-hydroxybenzoic acid (CAS 899299-08-2)
- 4-(3,5-dichlorobenzamido)-2-hydroxybenzoic acid (CAS 926196-67-0)
- 5-(3,5-dichlorobenzamido)-2-hydroxybenzoic acid (CAS 926187-11-3)
- 2-(2,5-Dichlorobenzamido)-5-methylbenzoic acid (CAS 1036516-96-7)
- 2-(2,4-Dichlorobenzamido)-5-methylbenzoic acid (CAS 518021-63-1)
- Methyl 2-(2,4-dichlorobenzamido)benzoate (CAS 82525-34-6)
Recommended Standards
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- 4-[2,4-dichloro-5-(2-propynyloxy)phenyl]-3,5-thiomorpholinedione (CAS 339099-45-5)
- Tert-butyl 6-bromo-8-fluoro-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 1613147-81-1)
- Ethyl 8-iodo-6-methylimidazo[1,2-a]pyridine-3-carboxylate (CAS 1565827-85-1)
- Isoxazole, 4-(bromomethyl)-5-cyclopropyl-3-(2,6-dichlorophenyl)- (CAS 946426-94-4)
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- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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