Thermodynamic properties of the c-aminobutyric acid
2009
A metastable form of c-aminobutyric acid has been prepared by sublimation under vacuum. A theoretical unary phase diagram has been deduce from experimental thermal analysis. Aqueous solution of c-aminobutyric acid (Gaba) prepared from commercial product (monoclinic) does not cross blood-brain barrier after intra peritoneal administration to mice, hence it displays no anticonvulsion activity. Therefore, we developed a polymorphic form, the solution of which presents such activity. In the present paper the preparation and the physico-chemical properties are reported.
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