4-Chloro-2-(4-methylphenyl)benzoic acid CAS 135070-65-4
| CAS No. | 135070-65-4 |
| Molecular Formula | C14H11ClO2 |
| Molecular Weight | 246.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-Chloro-2-(4-methylphenyl)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.
4-Chloro-2-(4-methylphenyl)benzoic acid (CAS 135070-65-4) is a high-purity analytical reference standard with the molecular formula C14H11ClO2 and a molecular weight of 246.69 g/mol.
Based on its molecular formula C14H11ClO2, 4-Chloro-2-(4-methylphenyl)benzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 246.69 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C14H11ClO2 |
| Molecular Weight | 246.69 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
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Recommended Standards
- 3-Chloro-4-methoxybenzophenone (CAS 13389-51-0)
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- 2-(Benzyloxy)-4-chlorobenzaldehyde (CAS 1334615-03-0)
- 2-((3-Chlorophenyl)amino)benzamide (CAS 13625-33-7)
- methyl 5-sulfamoyl-1,3-thiazole-4-carboxylate (CAS 89502-04-5)
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- 1-(3-Chloro-2-fluorophenyl)cyclopropanecarboxylic Acid (CAS 1260763-00-5)
- (1-Hexylpyrrolidin-3-yl)methanol (CAS 71548-35-1)
- (3R,4S)-1-(tert-Butoxycarbonyl)-4-methoxypyrrolidine-3-carboxylic acid (CAS 2382100-41-4)
- 5-Methoxy-4-methyl-2-nitrobenzoic acid (CAS 857599-32-7)
- N,N-Diethyl-N-(2-iodobenzyl)amine (CAS 99558-03-9)
- Ethyl 2-hydroxy-5-(2-methylthiazol-4-yl)benzoate (CAS 1416346-30-9)
- Hexapeptide-10 (CAS 146439-94-3)
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