天然的生物硷都含有氮原子,氮原子在生物硷分子中呈胺基状态存在,因此呈现一定程度的硷性,在医药上,通常都用生物硷与酸类相结合而成的盐。很多人工合成的含氮物质,在化学结构和性质方面与生物硷相似,它们在水溶液中的性质也相同,因此统称有机硷。本类物质在配制注射液和其他用途的水溶液中,常因各种条件的变化,而影响稳定性,现在,根据一些 Natural alkaloids all contain nitrogen atoms. Nitrogen atoms exist in amine groups in alkaloids, so they show a certain degree of alkalinity. In medicine, salts of alkaloids and acids are usually used. Many synthetic nitrogen-containing substances, similar in chemical structure and nature to alkaloids, have the same properties in aqueous solutions and are therefore collectively referred to as organic bases. This class of substances in the preparation of injection and other uses of aqueous solution, often due to various conditions change, and affect the stability, and now, according to some