| Add gradually ten ounces of piperazine, a pint of Harrogate water and inhale leisurely through a zoetrope. |
| The final step involved a nucleophilic substitution of the 2-chloro group by piperazine at high temperatures. |
| These and other piperazine derivates have been used increasingly as ingredients in tablets sold as Ecstasy. |
| Drugs assessed in these trials included albendazole, piperazine, mebendazole, levamisole, pyrantel, and tetrachlorethylene. |
| Fluphenazine is a piperazine phenothiazine that is structurally similar to perphenazine and prochlorperazine. |
| Thus, the piperazine ring rotates while the rest of the molecule stays in the starting x-ray conformation during the simulation. |
