更多pyridine例句

1. It was filtered off and distilled with caustic soda, but the distillate did not contain pyridine.
2. Most of these are of a basic character, and belong to the pyridine and the quinoline series.
3. This reagent is added until the acid reaction has just disappeared and a faint smell of pyridine is perceived.
4. The 1.5 diketones of this type, when heated with aqueous ammonia, form pyridine derivatives.
5. This is not exactly the case with the higher groups of alkaloids—the derivatives of pyridine and quinoline.