2,4-Dichloro-3-formylbenzoic acid CAS 196819-51-9
| CAS No. | 196819-51-9 |
| Molecular Formula | C8H4Cl2O3 |
| Molecular Weight | 219.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,4-Dichloro-3-formylbenzoic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 2,4-Dichloro-3-formylbenzoic acid (CAS 196819-51-9), a certified reference material (molecular formula C8H4Cl2O3, MW 219.02 g/mol) for analytical method development and quality control.
The molecular framework of 2,4-Dichloro-3-formylbenzoic acid (C8H4Cl2O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional 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.
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.
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 | C8H4Cl2O3 |
| Molecular Weight | 219.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 4,5-Dichloro-2-formylbenzoic acid (CAS 1058164-94-5)
- 6,7-Dichloro-3-hydroxyisobenzofuran-1(3H)-one (CAS 112794-36-2)
- 3,5-Dichloro-4-formylbenzoic acid (CAS 153203-80-6)
- 2,6-Dichloro-4-formylbenzoic acid (CAS 1807998-43-1)
- 4,6-Dichloro-3-methoxy-1H-pyrazolo[3,4-d]pyrimidine (CAS 1936241-59-6)
- 5-[(4,5-Dichloro-1H-imidazol-1-yl)methyl]-2H-1,2,3,4-tetrazole (CAS 680211-57-8)
- Methyl 2,6-dichloro-4-methylbenzoate (CAS 1098620-09-7)
- methyl 2,5-dichloro-3-methylbenzoate (CAS 1241948-41-3)
Recommended Standards
- 2-(2,5-Dichlorophenyl)-2-oxoacetic acid (CAS 26767-05-5)
- 3-Iodo-5-methylpyridine (CAS 15366-64-0)
- 2-(3,4-Dichlorophenyl)-2-oxoacetic acid (CAS 64471-83-6)
- 2-(Iodomethyl)pyridine (CAS 929876-97-1)
- 4-Methyl-3 5-dinitrobenzyl alcohol 96 (CAS 171809-20-4)
- Methyl (2E)-2-cyano-3-[2-(piperidin-1-yl)-1,3-thiazol-5-yl]prop-2-enoate (CAS 477868-73-8)
- 5-chloro-3-ethenyl-2-fluoropyridine (CAS 1824297-16-6)
- 2-(4-(2-Butylbenzofuran-3-carbonyl)-2,6-diiodophenoxy)acetic acid (CAS 147030-47-5)
- 3-(6-(Piperidin-1-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)benzamide (CAS 596824-07-6)
- MEthyl 2-(4-chlorophenyl)benzoate (CAS 17103-28-5)
- (Z)-4-((3,4-Dimethylphenyl)amino)-4-oxobut-2-enoic acid (CAS 85843-38-5)
- 3-((tetrahydro-2h-pyran-4-yl)methoxy)piperidine (CAS 933758-73-7)
- 5-Hydrazinyl-8-methylpyrido[2,3-d]pyridazine (CAS 90223-58-8)
- Tirzepatide (CAS 2023788-19-2)
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