2-Chloro-4,5-dimethylphenol CAS 1124-04-5
| CAS No. | 1124-04-5 |
| Molecular Formula | C8H9ClO |
| Molecular Weight | 156.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-4,5-dimethylphenol (CAS 1124-04-5) is a high-purity analytical reference standard with the molecular formula C8H9ClO and a molecular weight of 156.61 g/mol.
Based on its molecular formula C8H9ClO, 2-Chloro-4,5-dimethylphenol contains a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 156.61 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), 2-Chloro-4,5-dimethylphenol 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 | C8H9ClO |
| Molecular Weight | 156.61 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-2-phenylethanol (CAS 1004-99-5)
- 6-Chloro-5-ethylpyridin-2-amine (CAS 1004294-54-5)
- 4-Chloro-5-isopropylpyrimidine (CAS 1015846-32-8)
- 6-chloro-1-N-methylbenzene-1,2-diamine (CAS 102074-47-5)
- 2-chloro-3,4-dimethylphenol (CAS 10283-15-5)
- 2-Chloro-4,5,6,7-tetrahydro-1H-benzimidazole (CAS 1049127-52-7)
- 3-Chloro-N,N-dimethylpyridin-2-amine (CAS 1060801-41-3)
- 6-Chloro-N,N-dimethylpyridin-2-amine (CAS 1060801-42-4)
Recommended Standards
- 2-Chloro-4-propylpyrimidine (CAS 111196-80-6)
- 4-Chloro-2,5-dimethylphenol (CAS 1124-06-7)
- 6-Chloro-N,5-dimethylpyridin-3-amine (CAS 1104455-32-4)
- 1-(3-Chloropyridin-4-yl)ethan-1-amine (CAS 1149588-22-6)
- Tert-butyl 3-(2-hydroxyethoxy)pyrrolidine-1-carboxylate (CAS 1353982-63-4)
- 7-Hydroxy-1,2,3,4-tetrahydro-8H-pyrido[1,2-a]pyrazin-8-one (CAS 1210687-36-7)
- (E)-Ethyl 3-oxohex-4-enoate (CAS 25654-09-5)
- (1H-pyrrolo[2,3-c]pyridin-4-yl)methanol (CAS 1352395-31-3)
- 2-Iodo-3-trifluoromethyl-pyrazine (CAS 1286744-15-7)
- 4-Cyclopropoxy-6-formyl-N-methylnicotinamide (CAS 1243464-20-1)
- 3-((5-((4-Fluorophenyl)carbamoyl)pyrimidin-2-yl)thio)benzoic acid (CAS 923291-83-2)
- Probenecid Impurity 4 (CAS 126865-08-5)
- 3-(Benzyloxy)-5-nitrobenzoic Acid (CAS 63660-02-6)
- Lixisenatide (CAS 320367-13-3（free base）)
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