In the present invention there is disclosed a process for preparing a lyophilized preparation containing pantoprazole wherein the preoparation process comprises freeze-drying of an aqueous solution of pantoprazole ethylenediamine tetraacetic acid and/or a suitable salt thereof and sodium hydroxide and/or sodium carbonate. The thus obtained preparations have advantageous properties when reconstituted for injection.

Dosage forms for oral administration of the magnesium salt of pantoprazole are described.

The invention relates to (-)-pantoprazole magnesium and its hydrates and to medicaments comprising these compounds.

The invention relates to compounds of formula 1 and to medicaments comprising these compounds further to intermediates of formula 2 and 3.

Dosage forms for oral administration of the magnesium salt of (S)-pantoprazole are described.

The invention relates to (−)-pantoprazole magnesium and its hydrates and to medicaments comprising these compounds.

Dosage forms for the oral administration of the magnesium salt of pantoprazole are described.

Lyophilized pantoprazole preparations which are obtainable by freeze-drying of an aqueous solution of pantoprazole ethylenediamine tetraacetic acid and/or a suitable salt thereof and sodium hydroxide and/or sodium carbonate are disclosed. The preparations have advantageous properties when reconstituted for injection.

Lyophilized pantoprazole preparations which are obtainable by freeze-drying of an aqueous solution of pantoprazole ethylenediamine tetraacetic acid and/or a suitable salt thereof and sodium hydroxide and/or sodium carbonate are disclosed. The preparations have advantageous properties when reconstituted for injection.

The invention relates to a novel process for preparing (S)-pantoprazole using a chiral zirconium complex or a chiral hafnium complex.