4,5-Dichloro-2-methylbenzoic acid CAS 5252-98-2
| CAS No. | 5252-98-2 |
| Molecular Formula | C8H6Cl2O2 |
| Molecular Weight | 205.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,5-Dichloro-2-methylbenzoic acid.
4,5-Dichloro-2-methylbenzoic acid (CAS 5252-98-2), molecular formula C8H6Cl2O2 and molecular weight 205.04 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,5-Dichloro-2-methylbenzoic acid (C8H6Cl2O2) 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4,5-Dichloro-2-methylbenzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H6Cl2O2 |
| Molecular Weight | 205.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1958 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 3,5-Dichloro-2-methyl-benzoic acid (CAS 101567-48-0)
- 3,6-Dichloro-N-methyl-2-pyridinecarboxamide (CAS 1021077-12-2)
- 3’,4’-Dichloro-2-hydroxyacetophenone (CAS 113337-38-5)
- 2,5-Dichloro-3-methylbenzoic acid (CAS 1160573-37-4)
- 2,3-Dichloro-4-methylbenzoic acid (CAS 1254073-62-5)
- 2,4-Dichloro-7,8-dihydro-6H-pyrano[3,2-d]pyrimidine (CAS 1260088-59-2)
- 2,4-Dichloro-6,7-dihydro-5H-pyrano[2,3-d]pyrimidine (CAS 1260088-95-6)
- 2,4-Dichloro-5,8-dihydro-6H-pyrano[3,4-d]pyrimidine (CAS 1269461-25-7)
Recommended Standards
- 4,5-Dichloro-2-methoxybenzaldehyde (CAS 883532-73-8)
- 4,6-Dichloro-5-methylnicotinamide (CAS 479089-95-7)
- 3-Chloro-1-cyclopropyl-1H-pyrazole-4-carbonyl chloride (CAS 243120-24-3)
- 4,6-Dichloro-N-cyclopropyl-1,3,5-triazin-2-amine (CAS 32889-45-5)
- n-(2-(Tert-butylamino)-2-oxoethyl)-N-methylbenzamide (CAS 1043116-15-9)
- 3-Trifluoromethyl-2-methylvaleranilide (CAS 1939-26-0)
- 2-(2-Morpholino-4-phenylthiazol-5-yl)acetic acid (CAS 1443290-31-0)
- 5-((4-Bromophenyl)sulfonyl)-N-methyl-1,2,3-thiadiazole-4-carboxamide (CAS 339107-83-4)
- n-(3-(Azepan-1-ylsulfonyl)phenyl)furan-2-carboxamide (CAS 752215-38-6)
- 2H-chromen-2-amine (CAS 67747-72-2)
- Methyl 3-formyl-2-pyridinecarboxylate (CAS 133155-82-5)
- 1-(4-Chloro-2-fluorophenyl)-3,5-dimethyl-1H-pyrazole-4-carbaldehyde (CAS 2379321-22-7)
- 2-methylimidazo[2,1-b]thiazole-5-carboxylic acid (CAS 1007874-97-6)
- Tirzepatide Impurity 17 (CAS CATO-C4X-324017)
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