The project of the present invention novel forms improved in the preservation stability that provides a kind of 3- (3- { 4- [3- (β-D- glucopyanosyl oxygroup) -5- isopropyl -1H- pyrazoles -4- ylmethyl] -3- methylphenoxy } propyl amido) -2,2- dimethyl propylene vinegar amine.The solution of the present invention is bis- [3- (3- { 4- [3- (β-D- glucopyanosyl oxygroup) -5- isopropyl -1H- pyrazoles -4- ylmethyl] -3- methylphenoxy } propyl amido) -2,2- dimethyl propylene vinegar amine] singly secrete acid ester salt, by what, it has extremely excellent preservation stability, can be used as pharmaceuticals bulk pharmaceutical chemicals. Furthermore extremely good crystallinity is shown by what, can be refined by extremely easy method, therefore is suitble to industrialness production.本發明之課題在於提供一種3-(3-{4-[3-(β-D-葡萄吡喃糖氧基)-5-異丙基-1H-吡唑-4-基甲基]-3-甲基苯氧基}丙基胺基)-2,2-二甲基丙醯胺之保存安定性經改良之新穎形態。本發明之解決手段為雙[3-(3-{4-[3-(β-D-葡萄吡喃糖氧基)-5-異丙基-1H-吡唑-4-基甲基]-3-甲基苯氧基}丙基胺基)-2,2-二甲基丙醯胺]‧單泌酯酸鹽，由於其具有極優異之保存安定性，可作為醫藥品原料藥。再者，由於顯示極良好之結晶性，可藉由極簡便的方法予以精製，故適合工業性生產。
