Process for the preparation of a potassium salt of penicillin G in crystal form from a suspension comprising Pen G K, butylacetate and methanol.

Pure, crystalline sodium penicillin weighing 3.9064 g. and. assaying 1460 ... C., and crystallizing a pure penicillin salt therefrom. 4. In a process ...

... antibiotics of the penicillin class known which have the empirical formula C9H11O4SN2R. Penicillin G, F, dihydro F, K and X are all naturally occurring ...

c Allergy and Immunology Training Program, Brigham and Women's Hospital, 1 Jimmy Fund ... Diagnosis of penicillin, amoxicillin, and cephalo- sporin allergy ...

In this manner, for example, crystalline sodium penicillin G, crystalline potassium penicillin G, and calcium penicillin G can be obtained in a highly purified ...

A crystalline complex of penicillin G 1(S)-oxide and acetone is described, the complex being a useful intermediate in the preparation of other penicillins ...

The crystalline (d+l)-1-(3,4-dichlorophenyl)-2-amino-propane salt of penicillin G melted at 124-128" C., and had a Staph. aureus value of 970 u./mg. In the ...

The same methods may be employed to produce fine particle size crystalline procaine salts of other penicillins; such as, for example, penicillins X, F, K and ...

... penicillin G, is disclosed and claimed in Szabo and Bruce U.S.P. ... pressure for one hour, and cooled immediately to 60 C.; 0.13 gram of sterile ...

The crystals of triethylamine salt of penicillin G as thus obtained begin to melt at a temperature between approximately and approximately C., and melt almost ...

water is added to 0.198 gram of sodium penicillin G in 6 cc. water. Upon scratching and cooling, the crystalline penicillin G salt of N-(betachloro-beta ...

g/ml CAM, and grown overnight at 37° C. A single colony from each culture was ... As used herein, “penicillin G” and “benzylpenicillin” refer to the ...

of sodium penicillin G in cc. of water. Upon scratching and cooling, the crystalline penicillin G salt of a-phenyl-fi-dibenzylaminoethano1 precipitates and is ...

"Extract" is defined herein as the organic solvent to which the penicillin selected from the group of Penicillin G and Penicillin V has been extracted. The ...

... antibiotics as penicillin G, penicillin V and cephalosporin C. These fermentation products, also referred to as PenG, PenV and CefC, respectively, are the ...

The assay of the crystals shown 1595 units of penicillin per mg, and the content of benzyl penicillin (penicillin G) is 91.3%. crystals are dissolved in ...

... antibiotics as penicillin G, penicillin V and cephalosporin c. These fermentation products, also referred to as PenG, PenV and CefC, respectively, are the ...

Alternatively, the crystalline wet cake of sylvite that will comprise the penicillium mould of the group that is selected from penicillin G and V-cillin mixes ...

... C. in ... crystalline dibenzylethylenediamine di-penicillin G ... penicillin G which is stable and suitable for oral administration into humans and animals.

... and washed on the filter with about 250 ml. of isopropyl alcohol. The crystals, after drying at 50° C., weighted 61.6 g. Step yield=91.99%. Overall yield ...