1,4-Dichloro-2-methylbenzene CAS 19389-61-9
| CAS No. | 19389-61-9 |
| Molecular Formula | C7H6Cl2 |
| Molecular Weight | 161.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1,4-Dichloro-2-methylbenzene 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.
1,4-Dichloro-2-methylbenzene (CAS 19389-61-9), molecular formula C7H6Cl2 and molecular weight 161.03 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,4-Dichloro-2-methylbenzene (C7H6Cl2) contains chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 161.03 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C7H6Cl2 |
| Molecular Weight | 161.03 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| 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.) | 1962 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 4,4-Dichloro-4-fluorobutan-1-ol (CAS 236736-27-9)
- 4,5-Dichloro-1H-pyrrole-2-carbonitrile (CAS 51147-99-0)
- 1,3-Dichloro-2-(chloromethyl)propane (CAS 66703-69-3)
- 3,5-Dichloro-2-methylpyridine (CAS 100868-45-9)
- 3,5-Dichloro-4-methylpyridine (CAS 100868-46-0)
- 3,4-Dichloro-2-methylpyridine (CAS 103949-58-2)
- 3,6-Dichloro-2-methylpyridine (CAS 123280-64-8)
- 3,4-Dichloro-5-methylpyridine (CAS 1261727-04-1)
Recommended Standards
- Iodoethane-d5 (stabilized with copper) (CAS 6485-58-1)
- Bromobenzene-2,3,5,6-d4 (CAS 64646-03-3)
- 5-Bromo-3-methyl-1H-pyrazole (CAS 5744-68-3)
- CAS 2055167-74-1 (CAS 2055167-74-1)
- (4-(Aminomethyl)phenyl)(phenyl)methanone (CAS 94341-55-6)
- Methyl N-{3-[(4-chlorophenyl)methoxy]thiophen-2-yl}carbamate (CAS 339009-49-3)
- 5-Isopropyl-1H-indazole (CAS 1426425-86-6)
- (2R,3R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-hydroxy-3-(m-tolyl)propanoic acid (CAS 1217663-73-4)
- 2-(1,1-Dioxo-tetrahydro-1lambda*6*-thiophen-3-ylamino)-4-methyl-pentanoic acid (CAS 792893-05-1)
- 2-Cyclopropoxy-4-isopropoxy-1-isopropylbenzene (CAS 1243470-26-9)
- 2-Chloro-5-methoxy-4,6-dimethylpyrimidine (CAS 1403759-64-7)
- 1-(4-Fluoro-2-methylphenyl)ethan-1-ol (CAS 700-34-5)
- 4'-Cyano-biphenyl-4-acetic acid (CAS 144529-87-3)
- Biotinyl-Neuropeptide Y (human, rat) trifluoroacetate salt (CAS 213779-13-6)
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