3-(4-Chlorobenzylidene)pentane-2,4-dione CAS 19411-75-7
| CAS No. | 19411-75-7 |
| Molecular Formula | C12H11ClO2 |
| Molecular Weight | 222.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(4-Chlorobenzylidene)pentane-2,4-dione (CAS 19411-75-7) is a high-purity analytical reference standard with the molecular formula C12H11ClO2 and a molecular weight of 222.67 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 3-(4-Chlorobenzylidene)pentane-2,4-dione is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 222.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H11ClO2 |
| Molecular Weight | 222.67 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
Related Chlorobenzylidene Standards
- 4-(4-Chlorobenzylidene)-3-methylisoxazol-5(4H)-one (CAS 17975-47-2)
- (Z)-4-(4-chlorobenzylidene)-2-methyloxazol-5(4h)-one (CAS 93634-55-0)
- 4-(3-Chlorobenzylidene)-2-methyloxazol-5(4H)-one (CAS 57689-69-7)
- 4-(4-Chlorobenzylidene)-2-methyl-5-oxazolone (CAS 3237-71-6)
- N-(4-Chlorobenzylidene)-5-methylisoxazol-3-amine (CAS 88812-63-9)
- 3-(4-(4-Chlorobenzylidene)-2,3-dioxopyrrolidin-1-yl)propanoic acid (CAS 76628-85-8)
- N-(4-Chlorobenzylidene)-3-methylaniline (CAS 99484-19-2)
- (E)-1-(4-chlorobenzylidene)-2-phenylhydrazine (CAS 2829-26-7)
Recommended Standards
- 4-Chloro-3-(methoxymethyl)quinolin-8-amine (CAS 190139-07-2)
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- 2-Chloro-6-(4-isopropyl-4H-1,2,4-triazol-3-yl)pyridine (CAS 1952356-91-0)
- 5-(Trifluoromethyl)-2,3-dihydrobenzo[b]thiophene-2-carboxylic acid (CAS 1306604-87-4)
- N-(4-(5-(2-Nitrophenyl)-4,5-dihydro-1H-pyrazol-3-yl)phenyl)benzamide (CAS 648430-65-3)
- 2,7-Dimethylpyrene (CAS 15679-24-0)
- N-Benzyl-4-bromo-2-isopropylbenzamide (CAS 2364585-12-4)
- 3-Chloro-4-ethyl-5-phenyl-4h-1,2,4-triazole (CAS 1019032-87-1)
- 5-Chloro-1,4-dihydroxyanthracene-9,10-dione (CAS 245064-92-0)
- Aprepitant Impurity 30 (CAS 172678-47-6)
- 2-(oxolan-2-yl)acetyl chloride (CAS 2434-01-7)
- 5-tert-butyl-1-(pyridin-3-ylmethyl)-1H-pyrazol-3-amine dihydrochloride (CAS 1803566-56-4)
- D-Ser12-Semaglutide (CAS CATO-C4X-2226240)
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