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4-Amino-3 in stock High quality 37148-48-4 37148-48-4 low price
4-Amino-3 in stock High quality 37148-48-4 low price
use
3,5-dichlor-4-aminobenzene ethyl ketone is beige crystalline and can be used as a pharmaceutical intermediate. Chemical beige crystallization. Melting point 158-160 degrees C. Insoluble in cold water, slightly soluble in hot water, soluble in ethanol, ether, benzene and other organic solvents. The product is an intermediate for the synthetic cough-relief drug gram. It's the drug gram gasp intermediate
Production method
Chlorination of amino benzene ethyl ketone was obtained. The amino benzene acetone and acetic acid (80%) will be added to the reaction pot, stirring and dissolving, quickly added to the chlorine-containing ice acetic acid solution, the feeding temperature of 5 degrees C, plus bi, immediately into the ice water precipitation, filtration, washing, the crude product with ethanol recrystallization, that is, the finished product.
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