5-(Chloromethyl)isophthalaldehyde CAS 64891-88-9
| CAS No. | 64891-88-9 |
| Molecular Formula | C9H7ClO2 |
| Molecular Weight | 182.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 5-(Chloromethyl)isophthalaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 182.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
5-(Chloromethyl)isophthalaldehyde (CAS 64891-88-9) is a high-purity analytical reference standard with the molecular formula C9H7ClO2 and a molecular weight of 182.60 g/mol.
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 | C9H7ClO2 |
| Molecular Weight | 182.60 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
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- 4-(Chloromethyl)-1,3-dihydro-2H-pyrrolo[3,2-c]pyridin-2-one (CAS 1260666-36-1)
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Recommended Standards
- 4-Chloro-7-hydroxy-2,3-dihydroinden-1-one (CAS 81945-10-0)
- 5-Chloro-2-(hydroxymethyl)benzofuran (CAS 235082-69-6)
- 4-Chloro-5-methoxybenzofuran (CAS 77440-97-2)
- 5-Chloro-2,3-dihydrobenzofuran-7-carbaldehyde (CAS 82060-93-3)
- 1-(3-(1-Ethylpiperidin-2-yl)pyridin-2-yl)-4-methylpiperazine (CAS 1352530-81-4)
- 2,3-Diamino-6-(difluoromethyl)-4-nitropyridine (CAS 1806787-32-5)
- 2-Chloro-N-(3-chloro-4-methoxyphenyl)acetamide (CAS 7072-94-8)
- 3-Benzyl-4-hydroxy-1-[2-(1H-indol-3-yl)ethyl]-2(1H)-pyridinone (CAS 1797376-58-9)
- 5-(ethoxymethyl)furan-2-carboxaldehyde (CAS 1917-65-3)
- 4-Ethoxy-1,1,1-trifluorobut-3-en-2-one-4,4-diethoxy-1,1,1-trifluorobutan-2-one (CAS 2111897-00-6)
- H-Leu-Ala-Leu-Lys(Boc)-OH (CAS 149440-52-8)
- tert-Butyl 4-[2-(4-methoxyphenyl)-2-oxoethyl]piperazine-1-carboxylate (CAS 664362-19-0)
- 1,4-Dichloro-6-nitrophthalazine (CAS 159275-52-2)
- Tirzepatide Impurity 24 X TFA Salt (CAS CATO-C4X-324024)
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