(3-Chloro-2,5-difluorophenyl)methanol CAS 67640-34-0
| CAS No. | 67640-34-0 |
| Molecular Formula | C7H5ClF2O |
| Molecular Weight | 178.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (3-Chloro-2,5-difluorophenyl)methanol 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.
(3-Chloro-2,5-difluorophenyl)methanol (CAS 67640-34-0), molecular formula C7H5ClF2O and molecular weight 178.56 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (3-Chloro-2,5-difluorophenyl)methanol (C7H5ClF2O) contains a hydroxyl group, an ether linkage, fluorine/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 178.56 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H5ClF2O |
| Molecular Weight | 178.56 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | F/Cl-containing |
Related Chloro Standards
- 1-Chloro-2-(difluoromethoxy)benzene (CAS 119558-77-9)
- 1-Chloro-3-(difluoromethoxy)benzene (CAS 1214350-86-3)
- (3-Chloro-4,5-difluorophenyl)methanol (CAS 1260790-50-8)
- 2-Chloro-6-(difluoromethyl)phenol (CAS 1261440-82-7)
- 2-Chloro-1,3-difluoro-4-methoxybenzene (CAS 1261472-07-4)
- 3-Chloro-2-(difluoromethyl)phenol (CAS 1261479-57-5)
- 1-Chloro-4,5-difluoro-2-methoxybenzene (CAS 1261598-22-4)
- 1-Chloro-2,4-difluoro-5-methoxybenzene (CAS 1261628-93-6)
Recommended Standards
- (3-chloro-2,4-difluoro-phenyl)methanol (CAS 886501-09-3)
- (4-Chloro-2,5-difluorophenyl)methanol (CAS 252004-49-2)
- 2-Chloro-1,5-difluoro-3-methoxybenzene (CAS 18627-23-1)
- (4-Chloro-2,6-difluorophenyl)methanol (CAS 252004-50-5)
- 5-Bromo-N-cyclopentylfuran-2-carboxamide (CAS 545366-68-5)
- Morpholino(p-tolyl)methanone (CAS 63833-44-3)
- 4-(Methylsulfonamidomethyl)-N-(2-(thiophen-2-yl)ethyl)cyclohexane-1-carboxamide (CAS 1251545-93-3)
- 2-Chloro-n-{2-[4-(trifluoromethyl)phenoxy]ethyl}acetamide (CAS 1258640-40-2)
- Serotonin Impurity 5 (CAS CATO-C4X-25345)
- 1-(2-Aminoethyl)imidazolidine-2-thione (CAS 40778-59-4)
- α-Linolenic Acid-D14 (CAS 1622944-40-4)
- 7-Benzyl-1-oxa-3,7-diazaspiro[4.5]Decan-2-one (CAS 1465210-52-9)
- Methyl 5-bromo-2-chlorothiophene-3-carboxylate (CAS 1243475-64-0)
- Semaglutide Impurity 191 (CAS CATO-C4X-2226191)
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