Phenoxymethylpenicillin calcium

Phenoxyacetamidopenicillanic acid, 887 Phenoxybenzamine, 887 Phenoxybenzamine hydrochloride, 887 Phenoxybutyramidopenicillanic acid, 935 Phenoxyethylpenicillin, 877 Phenoxyisopropylnorsuprifen, 693 Phenoxymethylpenicillin, 887 Phenoxymethylpenicillin calcium, 888 Phenoxymethylpenicillin potassium, 888 Phenoxyphenylpropionic acid, 615 Phenoxypropazine, xvii Phenoxypropionamidopenicillanic acid, 877 Phenoxypropylpenicillin, 935 Phenprobamate, 888 Phenprocoumon, 889 Phenpropamine, 332... 

When 10 patients taking an unnamed anticoagulant were given intravenous phenoxymethylpenicillin calcium 300 000 units four times daily for 4 days, none had a change in their prothrombin-proconvertin value. For mention that, in another study no patients taking penicillins including phenoxymethylpenicillin had an increase in INR see (j) below. 

The principal penicillins of present importance are benzylpenicillin sodium or potassium salt (penicillin G) procaine benzylpenicillin benzathine penicillin benethamine penicillin phenoxymethylpenicillin, potassium or calcium salt (penicillin V) methicillin sodium phenethicillin sodium penicillamine hydrochloride. 

Total penicillins in this substance and in its calcium or potassium salts may be determined by a slight modification of the iodimetric method already described, while phenoxymethylpenicillin is determined spectro-photometrically. This may be done by dissolving in dilute sodium bicarbonate solution (water in the case of the salts) and measuring the extinction value at 268 m/ (as in the B.P.) or by dissolving in methanol and measuring at 276 mju (as in the U.S.P.), Recommended methods are as follows ... 

Phenoxymethylpenicillin calcium, (Ci6Hi705N2S)2 Ca, 2H2O, Mol. Wt. 774-9 and phenoxymethylpenicillin potassium, C16H17O5N2SK, Mol. Wt. 

Tablets of Phenoxymethylpenicillin, B,P., may contain phenoxymethylpenicillin or its calcium or potassium salt the content of active material may be determined by the iodimetric assay. Similar considerations apply to capsules.

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