Bilastine Hydroxy Impurity with CAS No: 1638785-23-5 is an impurity standard of Bilastine. Bilastine is an antihistamine used for allergic reactions like hay fever and hives. It blocks histamine effects, relieving symptoms such as itching and runny nose.Bilastine is non-sedating compared to older antihistamines. Buy high quality Bilastine Hydroxy Impurity from Molsyns Research. Molsyns Research is one of the leading manufacturer and exporter of Bilastine Hydroxy Impurity