title: Stability of gabexate mesilate products: Influence of the addition of mannitol.
abstract: Gabexate mesilate is a non-peptide protease inhibitor, developed in Japan, which is used in the treatment of acute pancreatitis and disseminated intravascular coagulation. This compound is readily hydrolyzed as it has ester bonds in its structure. It is now out of patent in Japan and there are many generic versions on the market. The crystal structure and the hydrolysate content of the branded product and nine generic versions were evaluated by X-ray diffractometry, thermal analysis and HPLC. The results showed that generic products containing mannitol as an additive had a higher content of hydrolysate as an impurity than the branded product or generic products formulated without mannitol, suggesting that the crystal structure might be altered and stability impaired in mannitol-containing drug products.
authors.affiliation: Department of Pharmacy, Hyogo Prefectural Amagasaki Hospital, Higashidaimotsu-cho, Amagasaki, Japan.
authors.forename: Miyuki
authors.initials: M
authors.lastname: Sakurai
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Abe
authors.forename: Noboru
authors.initials: N
authors.lastname: Okamura
authors.forename: Yohei
authors.initials: Y
authors.lastname: Inoue
authors.forename: Takeshi
authors.initials: T
authors.lastname: Akiyoshi
authors.forename: Kenji
authors.initials: K
authors.lastname: Matsuyama
authors.forename: Takahiro
authors.initials: T
authors.lastname: Uchida
authors.forename: Makoto
authors.initials: M
authors.lastname: Otsuka
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004355:Drug Stability; D016568:Drugs, Generic; D016670:Gabexate / Q000032:analysis / Q000737:chemistry*; D006358:Hot Temperature; D006868:Hydrolysis; D008353:Mannitol / Q000737:chemistry*; D008956:Models, Chemical; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D015842:Serine Proteinase Inhibitors / Q000032:analysis / Q000737:chemistry; D013696:Temperature; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D016568:Drugs, Generic; D004364:Pharmaceutical Preparations; D015842:Serine Proteinase Inhibitors; D008353:Mannitol; D016670:Gabexate