TC Publication, Tema 345U.S. Government Printing Office, 1970 |
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Página 49
... pressure , the pH of the reaction mature being from 5 to 9. The solvent for the hydrogea reaction is normally water , but other nonreducible sol.ents such as ethyl alcohol or di- oxane or mixtures of these with water may be employed ...
... pressure , the pH of the reaction mature being from 5 to 9. The solvent for the hydrogea reaction is normally water , but other nonreducible sol.ents such as ethyl alcohol or di- oxane or mixtures of these with water may be employed ...
Página 50
... pressure 70 to a small volume . If desired , the penicillins present in the brew can be largely removed by extraction with m organic solvent such as butyl acetate at an acid pH After neutralizing the liquid substantial amounts of im ...
... pressure 70 to a small volume . If desired , the penicillins present in the brew can be largely removed by extraction with m organic solvent such as butyl acetate at an acid pH After neutralizing the liquid substantial amounts of im ...
Página 51
... pressure for cue hom . The catalyst is then filtered of , washed well with water . and the combined filtrate and washings adjusted to pH 7 with N bydrochloric acid . The resulting solotion is 60 evigorated in vacuo at a temperature ...
... pressure for cue hom . The catalyst is then filtered of , washed well with water . and the combined filtrate and washings adjusted to pH 7 with N bydrochloric acid . The resulting solotion is 60 evigorated in vacuo at a temperature ...
Página 52
... pressure and low temperature . The product , the sodium salt of a - carbobenzyloxyamino- p - chlorobenzylpenicillin is obtained as a yellow solid . Example 4 PREPARATION OF c - AMINO - F CHLOROBENZYL- PENICILLIN 6 10 15 20 25 25 30 35 ...
... pressure and low temperature . The product , the sodium salt of a - carbobenzyloxyamino- p - chlorobenzylpenicillin is obtained as a yellow solid . Example 4 PREPARATION OF c - AMINO - F CHLOROBENZYL- PENICILLIN 6 10 15 20 25 25 30 35 ...
Página 53
... pressure to a volume of about 50 ml , where , on fine colorless needles separate . After 30 minutes the crystals are collected , washed with a little cold water , and dried over phosphorus pentoxide in vacuo 20 to give pire 6 [ D ...
... pressure to a volume of about 50 ml , where , on fine colorless needles separate . After 30 minutes the crystals are collected , washed with a little cold water , and dried over phosphorus pentoxide in vacuo 20 to give pire 6 [ D ...
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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