Abstract: The present invention relates to a new process for the preparation of the crystalline polymorph of sodium neridronate in form hemihydrate F, comprising the following steps: a) reacting the 6-aminohexanoic acid with a mixture of phosphorous acid and methanesulfonic acid at a temperature in the range from 60 to 80° C., under stirring, until a clear solution is obtained; b) adding phosphorus trichloride to said solution of step (a) under stirring at a temperature in the range of 60 to 80° C.; c) diluting with water the reaction mixture obtained from the previous step (b) and heating said water diluted mixture at a temperature in the range from 80 to 120° C.; d) cooling the heated mixture obtained in step (c) up to room temperature, diluting it with water, then slowly adding an aqueous sodium hydroxide solution up to a pH in the range from 4.2 to 4.6, to obtain a neutralized solution; e) bringing the neutralized solution of step (d) up to a temperature of about 70° C.

Abstract: The present invention relates to a new process for the preparation of the crystalline polymorph of sodium neridronate in form hemihydrate F, comprising the following steps: a) reacting the 6-aminohexanoic acid with a mixture of phosphorous acid and methanesulfonic acid at a temperature in the range from 60 to 80° C., under stirring, until a clear solution is obtained; b) adding rl phosphorus trichloride to said solution of step (a) under stirring at a temperature in the range of 60 to 80° C.; c) diluting with water the reaction mixture obtained from the previous step (b) and heating said water diluted mixture at a temperature in the range from 80 to 120° C.; d) cooling the heated mixture obtained in step (c) up to room temperature, diluting it with water, then slowly adding an aqueous sodium hydroxide solution up to a pH in the range from 4.2 to 4.6, to obtain a neutralized solution; e) bringing the neutralized solution of step (d) up to a temperature of about 70° C.

Abstract: Disclosed herein is an oxalate salt/co-crystal (tianeptine oxalate) of (RS)-7-(3-chloro-6-methyl-6,11-dihydrodibenzo[c,f] [1,2]thiazepin-11-ylamino)heptanoic acid S,S-dioxide (tianeptine) as shown in Formula I:

Abstract: The present invention relates to a novel crystalline hemihydrate polymorph of neridronic acid sodium salt, and a novel process for the preparation thereof comprising the steps of: 1) dissolving solid sodium neridronate in any crystalline form in water, at a temperature in the range from 70 to 90° C., to obtain an aqueous solution of sodium neridronate; 2) adding a solvent selected from the group consisting in ethanol, 1-propanol, and 2-propanol to the aqueous solution obtained from step (1), so that the final water:solvent volume ratio is in the range from 1:0.5 to 1:1, thus obtaining a suspension; 3) placing the suspension obtained from step (2) under mechanical stirring, at a temperature in the range from 60 to 95° C.; 4) recovering the crystalline hemihydrate form F of sodium neridronate formed in the previous step (3).

Abstract: Disclosed herein is an oxalate salt/co-crystal (tianeptine oxalate) of (RS)-7-(3-chloro-6-methyl-6,11-dihydrodibenzo[c,f] [1,2]thiazepin-11-ylamino)heptanoic acid S,S-dioxide (tianeptine) as shown in Formula I:

Abstract: Disclosed herein is an oxalate salt/co-crystal (tianeptine oxalate) of (RS)-7-(3-chloro-6-methyl-6,11-dihydrodibenzo[c,f] [1,2]thiazepin-11-ylamino)heptanoic acid S,S-dioxide (tianeptine) as shown in Formula I:

Abstract: The present invention relates to a novel crystalline hemihydrate polymorph of neridronic acid sodium salt, and a novel process for the preparation thereof comprising the steps of: 1) dissolving solid sodium neridronate in any crystalline form in water, at a temperature in the range from 70 to 90° C., to obtain an aqueous solution of sodium neridronate; 2) adding a solvent selected from the group consisting in ethanol, 1-propanol, and 2-propanol to the aqueous solution obtained from step (1), so that the final water:solvent volume ratio is in the range from 1:0.5 to 1:1, thus obtaining a suspension; 3) placing the suspension obtained from step (2) under mechanical stirring, at a temperature in the range from 60 to 95° C.; 4) recovering the crystalline hemihydrate form F of sodium neridronate formed in the previous step (3).

Abstract: Disclosed herein is an oxalate salt/co-crystal (tianeptine oxalate) of (RS)-7-(3-chloro-6-methyl-6,11-dihydrodibenzo[c,f][1,2]thiazepin-11-ylamino)heptanoic acid S,S-dioxide (tianeptine) as shown in Formula I:

Abstract: Luminescent and/or electroactive nanoparticles suitable for MRI (Magnetic Resonance Imaging) and/or PET (Positron Emission Tomography) are prepared by mixing luminescent or electroactive compounds and ethyl oxide/propyl oxide block-copolymers in an organic solvent, which is thereafter evaporated in order to obtain a residue; and by hydrolyzing-condensating tetraalkoxysilanes in an aqueous solution in the presence of the residue; the obtained nanoparticles show no or a negligible release of the luminescent or electroactive compounds and are useful for bio-analytic and bio-medic applications.