4-(CHLOROACETYL)CATECHOL
2-Chloro-3',4'-dihydroxyacetophenone
CAS: 99-40-1
Molecular Formula: C8H7ClO3
4-(CHLOROACETYL)CATECHOL - Names and Identifiers
| Name | 2-Chloro-3',4'-dihydroxyacetophenone |
| Synonyms | Chloracetyl catechol 4-(CHLORACETAL)CATECHOL 4-(CHLOROACETYL)CATECHOL 4-(CHLOROACETYL)PYROCATECHOL 3,4-DIHYDROXYPHENACYL CHLORIDE 3,4-Dihydroxyphenacyl chloride 2-chloro-3,4-dihydroxyacetophenone 3,4-DIHYDROXY-W-CHLOROACETOPHENONE 3,4-DIHYDROXY-2'-CHLOROACETOPHENONE 2-Chloro-3',4'-dihydroxyacetophenone A-CHLORO-3',4'-DIHYDROXYACETOPHENONE 3',4'-DIHYDROXY-2-CHLORO ACETOPHENONE alpha-Chloro-3,4-dihydroxyacetophenone 2-chloro-1-(3,4-dihydroxyphenyl)ethanone |
| CAS | 99-40-1 |
| EINECS | 202-754-8 |
| InChI | InChI=1/C8H7ClO3/c9-4-8(12)5-1-2-6(10)7(11)3-5/h1-3,10-11H,4H2 |
| InChIKey | LWTJEJCZJFZKEL-UHFFFAOYSA-N |
4-(CHLOROACETYL)CATECHOL - Physico-chemical Properties
| Molecular Formula | C8H7ClO3 |
| Molar Mass | 186.59 |
| Density | 1.444±0.06 g/cm3(Predicted) |
| Melting Point | 174-176°C(lit.) |
| Boling Point | 418.7±35.0 °C(Predicted) |
| Flash Point | 207°C |
| Solubility | Soluble in DMSO, methanol. |
| Vapor Presure | 1.33E-07mmHg at 25°C |
| Appearance | Solid |
| Color | White to Pale Beige |
| BRN | 2092660 |
| pKa | 7.59±0.20(Predicted) |
| Storage Condition | 2-8°C |
| Sensitive | Easily absorbing moisture |
| Refractive Index | 1.611 |
| MDL | MFCD00002200 |
| Physical and Chemical Properties | Crystal. Melting point 173 °c. |
4-(CHLOROACETYL)CATECHOL - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| HS Code | 29252900 |
4-(CHLOROACETYL)CATECHOL - Reference Information
| Overview | 3, 4-dihydroxy-2 '-chloroacetophenone is a key intermediate in the synthesis of carbamot. Carbazil also known as blood, adrenal pigment ammonia urea sodium salicylate, mainly used for increased capillary permeability caused by bleeding. |
| Use | The intermediate of haemostatic drug anluoxue, adrenomimetic drug gashaler, etc. |
| production method | add catechol and chloroacetic acid to a dry reaction pot, raise the temperature to 60 °c, and stir, 85-90 degrees C insulation 0.5h. Cool to below 65 ℃, add phosphorus oxychloride, react at 60-70 ℃ for 4h,70-80 ℃ for 4h. When it is difficult to stir the reactants thick, add water, raise the temperature, and hydrolyze at 90-100 ℃ for 0.5h. The crystals were cooled to below 10 ° C., and filtered. The solid matter was washed with water until neutral to obtain 2-chloro-3 ',4'-dihydroxyacetophenone. |
Last Update：2024-04-09 19:05:15
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