4-Chloro-1-hydroxynaphthalene-2-carbaldehyde CAS 58132-06-2
| CAS No. | 58132-06-2 |
| Molecular Formula | C11H7ClO2 |
| Molecular Weight | 206.63 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.
4-Chloro-1-hydroxynaphthalene-2-carbaldehyde (CAS 58132-06-2) is a high-purity analytical reference standard with the molecular formula C11H7ClO2 and a molecular weight of 206.63 g/mol.
Structurally, 4-Chloro-1-hydroxynaphthalene-2-carbaldehyde (C11H7ClO2) 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 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 206.63 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.
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 | C11H7ClO2 |
| Molecular Weight | 206.63 g/mol |
| Appearance | Pale yellow to 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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Recommended Standards
- 4-chloro-1H-pyrazolo[3,4-d]pyrimidine-3-carboxylic acid (CAS 2639294-43-0)
- 4-Chloro-2-phenylpyrimidin-5-ol (CAS 343349-18-8)
- 4-(Furan-2-yl)benzoyl chloride (CAS 713147-42-3)
- 4-Chloro-6-(pyridin-4-yl)pyrimidin-2-amine (CAS 53421-90-2)
- 6-Chloro-4-methoxybenzo[d]thiazol-2-amine (CAS 2351222-44-9)
- (2-(Difluoromethoxy)pyrimidin-4-yl)methanamine (CAS 1312096-01-7)
- (S)-1-(tert-Butoxycarbonyl)-4-(2-formyl-5-nitrophenyl)piperazine-2-carboxylic acid 1786500-32-0 (CAS 1786500-32-0)
- Benzyl cyclopropyl((1-(2-hydroxyethyl)pyrrolidin-2-yl)methyl)carbamate (CAS 1353956-28-1)
- Cefodizime Impurity 18 (CAS 66340-86-1)
- 1-(Azetidin-3-yl)piperazine (CAS 1339650-90-6)
- (4r)-6-(propan-2-yl)-3,4-dihydro-2h-1-benZopyran-4-ol (CAS 1567968-24-4)
- (6-Methylpyridin-2-yl)methanamine dihydrochloride (CAS 858838-82-1)
- N-Benzyl-1,1-diphenylmethanimine (CAS 7699-79-8)
- Semaglutide impurity 55 (CAS CATO-C4X-222655)
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