Ethyl 4-chloro-3,5-dimethoxybenzoate CAS 56518-51-5
| CAS No. | 56518-51-5 |
| Molecular Formula | C11H13ClO4 |
| Molecular Weight | 244.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ethyl 4-chloro-3,5-dimethoxybenzoate (CAS 56518-51-5), a certified reference material (molecular formula C11H13ClO4, MW 244.67 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Ethyl 4-chloro-3,5-dimethoxybenzoate is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 244.67 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).
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 | C11H13ClO4 |
| Molecular Weight | 244.67 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; 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.) | 1973 |
| Halogen Content | Cl-containing |
Related Ethyl Standards
- Ethyl 5-chloro-2,4-dimethoxybenzoate (CAS 1022091-79-7)
- 4-Chloro-2H-benzo[h]chromene-3-carbaldehyde (CAS 109179-59-1)
- 5-[(2-chloro-6-fluorophenyl)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione (CAS 1152542-00-1)
- Methyl 5-(4-chloro-1H-pyrazol-1-yl)-4-methyl-3-oxopentanoate (CAS 1229623-93-1)
- 4-Chloro-5-methoxy-2-(tetrahydro-2H-pyran-3-yl)pyridazin-3(2H)-one (CAS 1245646-05-2)
- methyl 2-chloro-2-(3,5-dimethoxyphenyl)acetate (CAS 1247455-96-4)
- 2-Chloro-1-(dibenzo[b,d]furan-2-yl)ethanone (CAS 13067-90-8)
- N-[2-(2-Chloro-6-nitrophenoxy)ethyl]-N,N-dimethylamine (CAS 1353505-03-9)
Recommended Standards
- Ethyl 2-chloro-4,5-dimethoxybenzoate (CAS 91427-57-5)
- Ethyl 5-chloro-4-formyl-1-isopropyl-1H-pyrazole-3-carboxylate (CAS 478620-61-0)
- 9H-Xanthene-9-carbonyl chloride (CAS 26454-53-5)
- Methyl 2-(2-chloro-3,4-dimethoxyphenyl)acetate (CAS 6834-52-2)
- 2,4-Dichloro-6-(2-methoxyphenyl)pyrimidine (CAS 1353856-29-7)
- 3-Methoxy-5-[4-(trifluoromethoxy)phenyl]pyridine (CAS 1261853-71-7)
- 2-Methyl-4-oxo-4H-chromene-6-carboxylic acid (CAS 35784-16-8)
- 3-Amino-N-(benzo[d][1,3]dioxol-5-yl)benzofuran-2-carboxamide (CAS 1082251-86-2)
- 5-Chloro-4-methoxypyridin-3-amine (CAS 1256790-34-7)
- Benzyl 3-(methylamino)pyrrolidine-1-carboxylate (CAS 1353971-26-2)
- rel-tert-Butyl (3R,4S)-3-ethyl-4-hydroxypyrrolidine-1-carboxylate (CAS 1228880-43-0)
- (4-Chlorophenyl)(3-((phenylthio)methyl)benzofuran-2-yl)methanone (CAS 338411-42-0)
- 2-Diethylaminoethanol-d (CAS 1092978-76-1)
- Tirzepatide Impurity 44 (CAS CATO-C4X-324044)
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