7-chloronaphthalen-1-ol CAS 56820-58-7
| CAS No. | 56820-58-7 |
| Molecular Formula | C10H7ClO |
| Molecular Weight | 178.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-chloronaphthalen-1-ol (CAS 56820-58-7), molecular formula C10H7ClO and molecular weight 178.61 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H7ClO, 7-chloronaphthalen-1-ol 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 178.61 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 7-chloronaphthalen-1-ol 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 | C10H7ClO |
| Molecular Weight | 178.61 g/mol |
| Appearance | Off-white to pale 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
Related chloronaphthalen Standards
- 2-Chloronaphthalen-1-ol (CAS 606-40-6)
- 3-Chloronaphthalen-1-ol (CAS 51877-58-8)
- 3-Chloronaphthalen-2-ol (CAS 56541-64-1)
- 5-Chloronaphthalen-1-ol (CAS 20816-76-6)
- 6-chloronaphthalen-1-ol (CAS 56820-70-3)
- 7-Chloronaphthalen-2-ol (CAS 40492-93-1)
- 3-Chloronaphthalen-2-amine (CAS 38410-42-3)
- 4-Chloronaphthalen-2-amine (CAS 90799-46-5)
Recommended Standards
- 6-Chloro-2-methyl-1H-inden-1-one (CAS 5728-96-1)
- Ethyl 2-(chlorocarbonyl)butanoate (CAS 37938-52-6)
- ethyl 2-chloro-3-oxopentanoate (CAS 24045-73-6)
- 4-(4-Chlorophenyl)but-3-yn-2-one (CAS 39180-26-2)
- Ethyl spiro[2.3]hexane-1-carboxylate (CAS 17202-57-2)
- Bis(4,4,4-trifluoro-1-phenylbutane-1,3-dionato)copper (CAS 14126-89-7)
- 2,3-Dihydro-1H-indole-6-carbonitrile hydrochloride (CAS 1187928-89-7)
- 3-Methyl-1-propyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 847818-80-8)
- 1-(2,4-Dichlorophenyl)-6-methyl-2-oxo-4-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (CAS 339276-98-1)
- (4-Methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)boronic acid (CAS 1181556-97-7)
- 1,5-Dimethyl-2-(m-tolyl)-1H-pyrazol-3(2H)-one (CAS 115722-26-4)
- (1S,2S)-2-Fluorocyclopropanecarboxylic acid (CAS 127199-14-8)
- Co(acac)(depe) (CAS 2393894-34-1)
- Liraglutide Impurity 22 (CAS 536721-25-2)
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