Crystals of 7β-[(Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-methoxyiminoacetamido]-3-(1-imidazo[1,2-b]-pyridazinium)methyl-3-cephem-4-carboxylate hydrochloride or a solvate thereof, which are stable and improved in solubility in water, are usable for an excellent antibacterial agent.
7β-[(Z)-2-(
5-氨基-1,2,4-噻二唑-3-基)-2-甲氧基亚
氨基乙酰
氨基]-3-(1-
咪唑并[1,2-b]-
哒嗪鎓)甲基-3-头孢-4-
羧酸盐酸盐或其溶液的结晶,在
水中的稳定性和溶解性都得到了改善,可作为一种优秀的抗菌剂。