This application provides the compound that can be the insufficient therapeutic agent of active urine bladder, the compound has low side effect risk and Orally-administrable. In addition, this application provides crystal, as medicament bulk pharmaceutical chemicals stability, long term storage, operability, medicine preparation in terms of be all advantageous. By what 2- [(2- (1R,5R) -2- oxos -5- [(1E,4S)-7,8,The fluoro- 4- hydroxy-4-methyls-octyl-s 1 of 8- tri-,7- diene -1- bases] cyclopenta } ethyl) sulfenyl] -1,The salt of 3- 4-thiazolecarboxylic acids or its non-enantiomer mixture and piperidin-4-yl methanol is chemically highly stable crystal, thus its can long term storage and the bulk pharmaceutical chemicals as medicament be highly useful.本申請提供了可爲膀胱活動不足的治療劑的化合物，所述化合物具有低的副作用風險並可口服給藥。此外，本申請提供了晶體，其作爲藥劑的原料藥在穩定性、長期儲存、可操作性、藥物製備的難易等方面都是有利的。由於2‑[(2‑{(1R,5R)‑2‑氧代‑5‑[(1E,4S)‑7,8,8‑三氟‑4‑羥基‑4‑甲基‑辛‑1,7‑二烯‑1‑基]環戊基}乙基)硫基]‑1,3‑噻唑‑4‑甲酸或其非對映異構體混合物與哌啶‑4‑基甲醇的鹽是化學上非常穩定的晶體，因此其可長期儲存並且作爲藥劑的原料藥是非常有用的。
