3,4-Dichlorocinnamic Acid CAS 1202-39-7
| CAS No. | 1202-39-7 |
| Molecular Formula | C9H6Cl2O2 |
| Molecular Weight | 217.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,4-Dichlorocinnamic Acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,4-Dichlorocinnamic Acid (CAS 1202-39-7), molecular formula C9H6Cl2O2 and molecular weight 217.05 g/mol, is a CATO reference standard with documented purity and traceability.
3,4-Dichlorocinnamic Acid (C9H6Cl2O2) 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, 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 | C9H6Cl2O2 |
| Molecular Weight | 217.05 g/mol |
| Appearance | Off-white to pale 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 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.) | 1957 |
| Halogen Content | Cl-containing |
Related Dichlorocinnamic Standards
Recommended Standards
- {6,8-dichloroimidazo[1,2-a]pyridin-2-yl}methanol (CAS 1235441-30-1)
- 2,4-Dichloro-7,8-dihydroquinazolin-5(6H)-one (CAS 1196151-98-0)
- 6,7-Dichloro-2-methyl-2,3-dihydro-1-benzofuran-3-one (CAS 1247582-99-5)
- 3,4-Dichloro-5-methoxy-1H-indazole (CAS 1167056-25-8)
- 2-(1H-Pyrrol-2-yl)phenol (CAS 42041-50-9)
- 5-ethyl-6-hydroxy-3-(4-methoxyphenyl)-2-sulfanyl-3,4-dihydropyrimidin-4-one (CAS 1240526-41-3)
- 2,4-Dichloro-5-(isopropoxycarbonyl)phenyl pyrrolidine-1-carboxylate (CAS 133636-96-1)
- 2-(2-Amino-4-(difluoromethyl)thiazol-5-yl)acetic acid (CAS 1706459-90-6)
- 38769-92-5 4-Methoxybenzylmagnesium chloride .25M THF 4-methoxybenzyl magnesium chloride 4-methoxybenzylmagnesium chloride (CAS 38769-92-5)
- 4-[4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)cyclohex-3-en-1-yl]morpholine (CAS 1046793-56-9)
- 6-Methoxytetrahydro-2H-pyran-3-ol (CAS 28194-32-3)
- 1,3-Dibromo-5-difluoromethoxy-2-(trifluoromethylthio)benzene (CAS 1806349-78-9)
- 3-chloro-2'-[8-(1,4-dioxa-8-azaspiro[4.5]decyl)methyl]-5-fluorobenzophenone (CAS 898756-42-8)
- Semaglutide Impurity 131 (CAS 2618647-80-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com