- Dopamine Impurity 19
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- $0.00 / 10mg
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2026-03-12
- CAS:99-40-1
- Min. Order: 10mg
- Purity: 98%
- Supply Ability: 500mg
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| | 2-Chloro-3',4'-dihydroxyacetophenone Basic information |
| | 2-Chloro-3',4'-dihydroxyacetophenone Chemical Properties |
| Melting point | 174-176 °C(lit.) | | Boiling point | 418.7±35.0 °C(Predicted) | | density | 1.444±0.06 g/cm3(Predicted) | | storage temp. | 2-8°C | | solubility | Soluble in DMSO, methanol. | | pka | 7.59±0.20(Predicted) | | form | powder | | color | White to Pale Beige | | BRN | 2092660 | | InChI | InChI=1S/C8H7ClO3/c9-4-8(12)5-1-2-6(10)7(11)3-5/h1-3,10-11H,4H2 | | InChIKey | LWTJEJCZJFZKEL-UHFFFAOYSA-N | | SMILES | C(=O)(C1=CC=C(O)C(O)=C1)CCl | | CAS DataBase Reference | 99-40-1(CAS DataBase Reference) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26-37/39-36 | | WGK Germany | 3 | | HS Code | 29252900 | | Storage Class | 11 - Combustible Solids | | Hazard Classifications | Eye Irrit. 2
Skin Irrit. 2
STOT SE 3 |
| | 2-Chloro-3',4'-dihydroxyacetophenone Usage And Synthesis |
| Chemical Properties | Off-White Solid | | Uses | 2-Chloro-3',4'-dihydroxyacetophenone is used as a styptic adrenobazone, quasi adrenaline drug gasp spirit of intermediates. | | Definition | ChEBI: 2-chloro-3',4'-dihydroxyacetophenone is an alpha-chloroketone, a member of acetophenones and an aromatic ketone. | | Synthesis | Anhydrous aluminum trichloride (6.0 g, 45 mmol) was slowly added to the cooled 1,2-dichloroethane (20 mL) solution at 5-10 °C and stirred for 30 min keeping the temperature at 5-10 °C. Subsequently, catechol (1) (2.0 g, 18.1 mmol) was added to the reaction mixture in batches over a period of 10 minutes and stirring was continued for 20 minutes. Chloroacetyl chloride (2.2 g, 19.3 mmol) was added dropwise to the reaction system at the same temperature. The reaction system was then warmed up to room temperature with continuous stirring for 20 hours. Upon completion of the reaction, the reaction was carefully quenched with dilute hydrochloric acid solution (40 mL) at 5-10 °C and stirred at room temperature for 2-3 hours. The solid product was collected by filtration and washed with water. The wet solid was suspended in dilute acetic acid and heated until completely dissolved. Activated charcoal (0.1 g) was added to the clarified solution to decolorize it, stirred for 30 minutes and then hot filtered. The filtrate was cooled to precipitate a solid, filtered, washed with water and dried to give the target product 2-chloro-1-(3,4-dihydroxyphenyl)ethanone (2). Yield: 2.5 g, 74% yield; melting point 175-177 °C. | | References | [1] European Journal of Medicinal Chemistry, 2014, vol. 82, p. 293 - 307
[2] Patent: WO2008/107109, 2008, A1. Location in patent: Page/Page column 4-5
[3] Patent: WO2018/127806, 2018, A1. Location in patent: Page/Page column 8
[4] Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 3, p. 858
[5] Zhurnal Russkago Fiziko-Khimicheskago Obshchestva, 1893, vol. 25, p. 154 |
| | 2-Chloro-3',4'-dihydroxyacetophenone Preparation Products And Raw materials |
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