3,5-Dichloro-4-methoxyphenol CAS 56680-68-3
| CAS No. | 56680-68-3 |
| Molecular Formula | C7H6Cl2O2 |
| Molecular Weight | 193.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3,5-Dichloro-4-methoxyphenol (C7H6Cl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, 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 193.03 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
3,5-Dichloro-4-methoxyphenol (CAS 56680-68-3) is a high-purity analytical reference standard with the molecular formula C7H6Cl2O2 and a molecular weight of 193.03 g/mol.
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 | C7H6Cl2O2 |
| Molecular Weight | 193.03 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
- 2,4-Dichloro-6-(methoxymethyl)pyrimidine (CAS 1037543-27-3)
- 3,5-Dichloro-1-ethylpyrazin-2(1H)-one (CAS 1187017-35-1)
- 2,5-Dichloro-4-methoxy-6-methylpyrimidine (CAS 1192479-55-2)
- 1-(4,5-Dichloro-1H-imidazol-1-yl)propan-2-one (CAS 1219557-54-6)
- 3,5-Dichloro-6-methoxypyridin-2-amine (CAS 1261269-27-5)
- 3,5-Dichloro-4-methoxypyridin-2-amine (CAS 1261269-31-1)
- 4,5-Dichloro-6-methoxy-2-methylpyrimidine (CAS 126804-42-0)
- 3,5-Dichloro-2-(hydroxymethyl)phenol (CAS 1314922-16-1)
Recommended Standards
- 3,5-Dichloro-4-ethoxypyridazine (CAS 889768-55-2)
- 3,6-Dichloro-4-ethoxypyridazine (CAS 98142-29-1)
- 3,5-Dichloro-4-(hydroxymethyl)phenol (CAS 720679-54-9)
- 3-bromo-2,5,6-trideuterio-4-fluoro-aniline (CAS 2127415-60-3)
- N-(5-Ethyl-1,3,4-thiadiazol-2-yl)-2-((5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl)thio)acetamide (CAS 892021-73-7)
- 1-(P-tolyl)-2-(1H-1,2,4-triazol-1-yl)ethan-1-one (CAS 58905-20-7)
- [(2,5-Dimethylphenyl)amino]thiourea (CAS 56737-76-9)
- 4-((Furan-3-ylmethyl)amino)-4-oxobutanoic acid (CAS 1421533-27-8)
- 27693-46-5 (2,3-Dimethylphenyl)(pyridin-2-yl)methanone DTXSID20642027 (CAS 27693-46-5)
- N,N,5-Trimethylisoxazol-3-amine (CAS 60148-37-0)
- 2-((1-(4-Chloro-2-nitrophenyl)-1H-pyrrol-2-yl)thio)-1-phenylethanone (CAS 112798-10-4)
- 4,5,6,7-Tetraphenylisobenzofuran-1,3-dione (CAS 4741-53-1)
- 5-Bromo-2-chloro-N,N-dimethylbenzamide (CAS 701258-20-0)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
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