TC Publication, Tema 345U.S. Government Printing Office, 1970 |
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Página 49
... temperature , e.g. , for twenty to sixty minutes The mixture is then ex- 28 65 tracted with ether to remove unreacted or hydrolyzed starting materials The solution is then acidified ( pref- erably in the col ) to pH 2 , as with dilute ...
... temperature , e.g. , for twenty to sixty minutes The mixture is then ex- 28 65 tracted with ether to remove unreacted or hydrolyzed starting materials The solution is then acidified ( pref- erably in the col ) to pH 2 , as with dilute ...
Página 50
... temperature . Since the use of strongly acid or alkaline conditions in the process of this invention should be ... temperature employed is preferably one from 20 ° C. to 35 ° C. and very satisfactory results have been obtained using a ...
... temperature . Since the use of strongly acid or alkaline conditions in the process of this invention should be ... temperature employed is preferably one from 20 ° C. to 35 ° C. and very satisfactory results have been obtained using a ...
Página 51
... temperature . The catalyst is then filtered and washed well with water , care being taken that it does not become dry . A solution of the sodium salt of a - carbobenzyloxyaminobenzylpenicillin ( 4 grans ) in water ( 20 ml . ) is added ...
... temperature . The catalyst is then filtered and washed well with water , care being taken that it does not become dry . A solution of the sodium salt of a - carbobenzyloxyaminobenzylpenicillin ( 4 grans ) in water ( 20 ml . ) is added ...
Página 52
... temperature and pres sure for one bour . The catalyst is then filtered off , washed well with water , and the combined filtrate and washings adjusted to pH 7 with N HC . The resulting solution was evaporated in vacuo at a temperature ...
... temperature and pres sure for one bour . The catalyst is then filtered off , washed well with water , and the combined filtrate and washings adjusted to pH 7 with N HC . The resulting solution was evaporated in vacuo at a temperature ...
Página 53
... temperature and atmospheric pres sure for bour . A neutral solution of sodium 6- [ D - ( — ) . « - ( carhobenzyloxyamino ) phenylacetamido ) penicillinate ( 20.4 g . ) in water ( 250 ml . ) is then added and shaking 10 in bydrogen is ...
... temperature and atmospheric pres sure for bour . A neutral solution of sodium 6- [ D - ( — ) . « - ( carhobenzyloxyamino ) phenylacetamido ) penicillinate ( 20.4 g . ) in water ( 250 ml . ) is then added and shaking 10 in bydrogen is ...
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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