2-(4-Chlorophenyl)malondialdehyde CAS 205676-17-1
| CAS No. | 205676-17-1 |
| Molecular Formula | C9H7ClO2 |
| Molecular Weight | 182.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(4-Chlorophenyl)malondialdehyde (CAS 205676-17-1), molecular formula C9H7ClO2 and molecular weight 182.60 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H7ClO2, 2-(4-Chlorophenyl)malondialdehyde 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 182.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.) | 2015 |
| Halogen Content | Cl-containing |
Related Chlorophenyl Standards
- 1-(4-Chlorophenyl)propane-1,2-dione (CAS 10557-21-8)
- (Z)-3-(3-Chlorophenyl)acrylic acid (CAS 14290-89-2)
- (E)-3-(2-Chlorophenyl)acrylic acid (CAS 939-58-2)
- (Z)-3-(2-Chlorophenyl)acrylic acid (CAS 704-96-1)
- (Z)-3-(4-chlorophenyl)acrylic acid (CAS 5676-62-0)
- 1-(2-Chlorophenyl)propane-1,2-dione (CAS 64497-33-2)
- 2-(3-Chlorophenyl)propanedial (CAS 74963-16-9)
- 2-(4-Chlorophenyl)prop-2-enoic acid (CAS 51747-43-4)
Recommended Standards
- 2-(4-Chloro-3-methylphenyl)-2-oxoacetaldehyde (CAS 93290-96-1)
- 2,3-Dihydro-benzofuran-2-carbonyl chloride (CAS 27347-32-6)
- 2-(2-Methoxyethoxy)ethyl carbonochloridate (CAS 50689-80-0)
- 2,3-Dihydrobenzofuran-6-carbonyl chloride (CAS 55746-02-6)
- 2-[(4-Chlorobutyl)methylamino]-N-(2,6-dimethylphenyl)acetamide Hydrochloride (CAS 25027-85-4)
- 2-Bromo-4,6-difluoro-n-methylbenzenesulfonamide (CAS 1094650-10-8)
- 1-(1-Methylpiperidin-3-yl)ethan-1-one hydrochloride (CAS 91324-28-6)
- (S)-3,4-Dimethoxy-N-methylbicyclo[4.2.0]octa-1,3,5-trien-7-amine (CAS 1630795-79-7)
- (1E)-1-{4-[(2,4-dichlorophenyl)methoxy]phenyl}-N-(2,4-difluorophenyl)methanimine (CAS 298217-67-1)
- Cyclohexa-1,4-dien-1-ylmethyl pyridazine-1(2H)-carboxylate (CAS 140200-92-6)
- Diclofenac Epolamine (CAS 119623-66-4)
- 2-(3-(Azetidin-1-ium-1-ylidene)-7-(azetidin-1-yl)-5,5-dimethyl-3,5-dihydrodibenzo[b,e]silin-10-yl)-4-(((2,5-dioxopyrrolidin-1-yl)oxy)carbonyl)benzoate (CAS 1811539-59-9)
- 5-Bromo-3-methyl-2-(pyrrolidin-3-yloxy)pyridine (CAS 1289269-60-8)
- Liraglutide Impurity 31 (CAS CATO-C4X-199231)
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