Diclofenac Impurity 20 CAS 60805-31-4
| CAS No. | 60805-31-4 |
| Molecular Formula | C13H8Cl2O2 |
| Molecular Weight | 267.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 267.11 g/mol gives Diclofenac Impurity 20 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Diclofenac Impurity 20 (CAS 60805-31-4), molecular formula C13H8Cl2O2 and molecular weight 267.11 g/mol, is a CATO reference standard with documented purity and traceability.
Diclofenac Impurity 20 (C13H8Cl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Diclofenac Impurity 20 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C13H8Cl2O2 |
| Molecular Weight | 267.11 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
Related Diclofenac Standards
- Diclofenac Impurity 18 (CAS 60805-30-3)
- Diclofenac EP Impurity B (CAS 22121-58-0)
- Diclofenac potassium Impurity 7 (CAS CATO-C4X-10517)
- Diclofenac EP Impurity C (CAS 27204-57-5)
- Diclofenac Impurity 11 (CAS 51550-51-7)
- Diclofenac impurity 5 (CAS CATO-C4X-16145)
- Diclofenac sodium Impurity 7 (CAS 127792-34-1)
- Diclofenac Impurity 20 (CAS 15362-44-4)
Recommended Standards
- ICA 110381 (CAS 325457-99-6)
- cis-N,N-Diethyl-2-iodocyclopropanecarboxamide (CAS 467426-68-2)
- N4-(2-chlorophenyl)-2-chloroisonicotinamide (CAS 680217-40-7)
- 7-iodo-5-methyl-pyrrolo[2,3-b]pyrazine (CAS 2306270-59-5)
- 3,3-Dipropylcyclobutane-1-carboxylic acid (CAS 66016-26-0)
- 6-methoxy DMT (CAS 2426-88-2)
- tert-Butyl (3S,4S)-4-methyl-3-(methylamino)piperidine-1-carboxylate hemioxalate (CAS 1946010-91-8)
- 2-(Dichloromethyl)-1,3-dioxane (CAS 5695-85-2)
- Tert-butyl (2-((4-fluorobenzyl)amino)ethyl)carbamate (CAS 519172-79-3)
- Ethyl 2-guanidino-4-methylthiazole-5-carboxylate hydrochloride (CAS 131184-96-8)
- 1-(3-Methyloxetan-3-yl)-N-((tetrahydrofuran-2-yl)methyl)methanamine (CAS 1341814-06-9)
- 1-Tritylpiperidine (CAS 20020-77-3)
- 3-Amino-N-(3-bromo-4-ethoxy-phenyl)-4-methoxy-benzenesulfonamide (CAS 380442-20-6)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
Why CATO?
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