(R)-Diclofop-methyl CAS 71283-65-3
| CAS No. | 71283-65-3 |
| Molecular Formula | C16H14Cl2O4 |
| Molecular Weight | 341.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (R)-Diclofop-methyl.
(R)-Diclofop-methyl (CAS 71283-65-3), molecular formula C16H14Cl2O4 and molecular weight 341.19 g/mol, is a CATO reference standard with documented purity and traceability.
(R)-Diclofop-methyl (C16H14Cl2O4) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C16H14Cl2O4 |
| Molecular Weight | 341.19 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 sealed and dry |
| 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.) | 1977 |
| Halogen Content | Cl-containing |
Related R Standards
Recommended Standards
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- (2E)-2-Cyano-N-[(1E)-{[(2,4-dichlorophenyl)methoxy]imino}methyl]-3-(dimethylamino)prop-2-enamide (CAS 338404-38-9)
- 2-(2-Chlorophenoxy)-6-(4-chlorophenyl)pyridine-3-carbonitrile (CAS 252059-09-9)
- 3-Aminotetrahydrofuran-3-carboxylic acid (Hydrochloride) (CAS 919098-94-5)
- N-(2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)ethyl)pent-4-ynamide (CAS 1781293-66-0)
- 4-iodo-2-methoxy-5-methyl-pyridine (CAS 1227602-73-4)
- 1-(2-(4-Bromophenyl)-2-oxoethyl)pyrrolidin-2-one (CAS 832753-10-3)
- 1-(Benzo[d][1,3]dioxol-5-yl)-N-(pyridin-3-ylmethyl)methanamine (CAS 328261-31-0)
- 3,3-Dimethyl-1,4-diphenylazetidin-2-one (CAS 5438-81-3)
- Methyl 5-bromo-2-chlorobenzoate (CAS 251085-87-7)
- Methyl 2-((tert-butoxycarbonyl)amino)-4-methylthiazole-5-carboxylate (CAS 1246829-22-0)
- 1-Methylcyclopropanamine (CAS 22936-83-0)
- Semaglutide Impurity 160 (x TFA Salt) (CAS CATO-C4X-2226160)
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