1. pertaining to or consisting of alkaloids. 
   与碱有关的或由其构成的。
2. Any of several alkaloids with similar structures. 
   一种结构相似的晶体碱
3. A brownish-black mixture of alkaloids remaining after extraction of crystalline alkaloids from cinchona bark, used as a quinine substitute. 
   奎诺酊将金鸡纳树皮中提取结晶生物碱之后，剩下来一种黑褐色的生物碱混合物，用作奎宁的替代物
4. a crystalline acid often used in medical research; obtained from ergotic alkaloids. 
   一种常用于医学研究的晶状酸，从麦角生物碱中提取。
5. an alkaloid extracted from the plant Rauwolfia serpentina (trade names Rau-Sed or Sandril or Serpasil) and used to treat hypertension. 
   从萝芙木属植物中提取出来的用来治疗高血压的一种生物碱（商标是rau-sed或sandril或serpasil）。

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