TC Publication, Tema 345U.S. Government Printing Office, 1970 |
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Página 49
... extracted at alkaline pH ( such as pH 8 ; aqueous sodium bicarbonate may be used , for example , if necessary to adjust the pH ) with a water - immiscible solvent such as ether to remove urreacted starting materials . The prod- uct in ...
... extracted at alkaline pH ( such as pH 8 ; aqueous sodium bicarbonate may be used , for example , if necessary to adjust the pH ) with a water - immiscible solvent such as ether to remove urreacted starting materials . The prod- uct in ...
Página 50
... extracted into diethyl ether or n - butanol at acid pH and then recovered by lyophilization or by conversion to a 40 ... extraction , as with toluene . ment of the sodium salt with strong aqueous acid con- verts the compound to the acid ...
... extracted into diethyl ether or n - butanol at acid pH and then recovered by lyophilization or by conversion to a 40 ... extraction , as with toluene . ment of the sodium salt with strong aqueous acid con- verts the compound to the acid ...
Página 51
... extracted once with half its volume of butyi acciate . The aqueous phase was separated and the pH adjusted to 7.5 ... extracted with ether . The extracted aqueous solution is covered with butanol and the pli ad- justed to 2 by the ...
... extracted once with half its volume of butyi acciate . The aqueous phase was separated and the pH adjusted to 7.5 ... extracted with ether . The extracted aqueous solution is covered with butanol and the pli ad- justed to 2 by the ...
Página 52
... extracted with ether . The extracted aqueous solution is covered with butanel and the pH adjusted to 2 by the addition of N hydrochloric acid . The acidified aqueous phase is extracted with butanol , the pH of the aqueous phase being ...
... extracted with ether . The extracted aqueous solution is covered with butanel and the pH adjusted to 2 by the addition of N hydrochloric acid . The acidified aqueous phase is extracted with butanol , the pH of the aqueous phase being ...
Página 53
... extracted twice into 300 ml of ether , the ether is washed with water and finally with 75 ml . of saturated NaHCO , The aqueous bicarbonate solution is mixed with 8 grams of 5 % palladium oa strontium carbonate ( Engelhard ) and ...
... extracted twice into 300 ml of ether , the ether is washed with water and finally with 75 ml . of saturated NaHCO , The aqueous bicarbonate solution is mixed with 8 grams of 5 % palladium oa strontium carbonate ( Engelhard ) and ...
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Términos y frases comunes
6-amino 6-aminopenicillanic acid acetone acylating added addition alleged American Home Products amine ampicillin antibiotic antitrust suit aqueous phase aqueous solution assaying Ayerst barium carbonate Beech-Nut Beecham Group Limited benzylpenicillin Bristol Laboratories Bristol-Myers Company butanol Canada carbonate carboxylic acid catalyst chemical chlorocarbonate cillin Clemm complainants Court Department of Justice E. R. Squibb Example fermentation filed filtered free acid Furazolidone Gram-negative Home Products Corporation hydrochloric acid hydrogen hydrogen at room importer of ampicillin investigation Jersey licensees manufacture method of competition million in 1968 mixture obtained Order be issued patent misuse penicillanic acid penicillin percent pharmaceutical phenylacetic acid plant PREPARATION President reaction respondent room temperature sales of ampicillin section 337 proceeding sell ampicillin semi-synthetic penicillins sodium bicarbonate sodium hydroxide sodium salt solvent Squibb and Sons stirred subsidiary Tariff Commission Temporary Exclusion Order tion triethylamine unfair act unfair method United vacuo Virgin Islands washed with water Wyeth Zenith Laboratories