3-Chloro-5-methoxybenzaldehyde CAS 164650-68-4
| CAS No. | 164650-68-4 |
| Molecular Formula | C8H7ClO2 |
| Molecular Weight | 170.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Chloro-5-methoxybenzaldehyde (CAS 164650-68-4) is a high-purity analytical reference standard with the molecular formula C8H7ClO2 and a molecular weight of 170.59 g/mol.
Based on its molecular formula C8H7ClO2, 3-Chloro-5-methoxybenzaldehyde contains a carboxylic acid group, 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 170.59 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H7ClO2 |
| Molecular Weight | 170.59 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 3-Chloro-4-hydroxy-5-methylbenzaldehyde (CAS 107356-10-5)
- 6-chloro-2,3-dihydro-1-benzofuran-3-ol (CAS 1154740-97-2)
- 4-chloro-2-(difluoromethyl)pyrimidine (CAS 1261453-07-9)
- 2-Chloro-5-(hydroxymethyl)benzaldehyde (CAS 1288998-81-1)
- 3-Chloro-5-(hydroxymethyl)benzaldehyde (CAS 1289062-81-2)
- 2-Chloro-3-(hydroxymethyl)benzaldehyde (CAS 1289263-62-2)
- 6-Chloro-2-hydroxy-3-methylbenzaldehyde (CAS 1310800-53-3)
- 4-Chloro-3-methoxybenzaldehyde (CAS 13726-16-4)
Recommended Standards
- 5-Chloro-4-hydroxy-2-methylbenzaldehyde (CAS 1556030-28-4)
- 3-chloro-6-(difluoromethyl)pyridazine (CAS 1706439-95-3)
- 3-Chloro-2-hydroxy-6-methylbenzaldehyde (CAS 153782-74-2)
- 2-Chloro-5-hydroxy-3-methylbenzaldehyde (CAS 1782405-41-7)
- 8-Methyl-3-phenyl-2H-pyrido[1,2-a]pyrimidine-2,4(3H)-dione (CAS 960-65-6)
- 4-chloro-2-[(2,2,2-trifluoroethyl)amino]benzoic acid (CAS 1341457-94-0)
- Methyl 2-(3-bromophenyl)-2,2-difluoroacetate (CAS 860771-96-6)
- 2-(3,5-Dichlorophenyl)thiazole-5-carboxylic acid (CAS 1183217-39-1)
- 2,3-Dichloro-N-isopropylaniline (CAS 54962-84-4)
- Methyl 5-(3-quinolinyl)nicotinate (CAS 893735-07-4)
- Bimatoprost (CAS 1365263-66-6)
- 4-Formyl-2-hydroxy-N-methylbenzamide (CAS 1243440-84-7)
- 4-Amino-5-chloropyridazin-3(2H)-one (CAS 55271-58-4)
- 1-His-N-a-ethylidene Semaglutide (CAS CATO-C4X-2226252)
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