5-Chloro-2,3-dihydro-1H-inden-1-ol CAS 33781-38-3
| CAS No. | 33781-38-3 |
| Molecular Formula | C9H9ClO |
| Molecular Weight | 168.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Chloro-2,3-dihydro-1H-inden-1-ol (CAS 33781-38-3) is a high-purity analytical reference standard with the molecular formula C9H9ClO and a molecular weight of 168.62 g/mol.
Based on its molecular formula C9H9ClO, 5-Chloro-2,3-dihydro-1H-inden-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 168.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 5-Chloro-2,3-dihydro-1H-inden-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 | C9H9ClO |
| Molecular Weight | 168.62 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
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Recommended Standards
- 5-(Chloromethyl)-2,3-dihydrobenzofuran (CAS 55745-68-1)
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- 4-Chlorophenylacetone (CAS 5586-88-9)
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- 5-Bromo-2-isopropyl-4-methylpyridine (CAS 2060024-61-3)
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- 7-Fluoro-8-nitroquinoline-2-carbaldehyde (CAS 1420799-84-3)
- tert-Butyl 2-(mercaptomethyl)pyrrolidine-1-carboxylate, 95% (CAS 1353989-50-0)
- 4-Acetamidobenzenesulfinic acid (CAS 710-24-7)
- 1-hydroxy-3H-2,1-benzoxaborol-4-amine (CAS 1285533-08-5)
- N-Methyl-N-(piperidin-2-ylmethyl)propan-2-amine (CAS 1016853-51-2)
- 2-Bromo-4-(difluoromethyl)-3-methoxy-5-nitropyridine (CAS 1806867-14-0)
- 2-(2-chloro-6-fluorophenyl)-2-(N-methylacetamido)acetic acid (CAS 1270614-28-2)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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