1 METHODS The title compound was synthesized from piperazine hexahydrate and p-chloronitrobenzene, and studied for its possibility of commercial use.

2 Objective To improve Piperazine condensation reaction in the preparation of Ciprofloxacin hydrochloride.

3 Activation performances of piperazine in membrane absorption and static state desorption were evaluated.

4 Methods: Terazosin hydrochloride was synthesized from anhydro - piperazine via acylation, reduction, amination, salification etc.

5 A new method for synthesising trans1 cinnamylpiperazine from piperazine dihydrochloride the byproduct in cinnarizine preparation, total yield was 90.

6 Another way was to combine directly anhydrous piperazine with 2,[www.Sentencedict.com]3-dichloro- bromobenzene through Ullmann reaction.

7 In particular, the invention is concerned with amido piperazine derivatives.

8 Some method about synthesis of piperazine with aliphatic amine were introduced.

9 Piperazine citrate is the drug of choice in the treatment of Ascaris infestations.

10 This invention relates to novel alkyl substituted piperazine derivatives useful as monoamine neurotransmitter re-uptake inhibitors.

11 The compounds have the connecting ring structures of piperazine or piperidine, have notable antitumor activity, and provide a new choice for preparing antitumor drugs in clinical practice.

12 The synthetic methods of piperazine are reviewed, its application and marie situation are also discussedthe.

13 Condensation reaction of piperazine is a very important step in the process of synthesis of ciprofloxacin.

14 Piperazine was separated from ethylenediamine byproduct polyethylene polyamines mixture by refrigeration and azeotrope distillation.

15 Condensation reaction of piperazine is a very important step in the process synthesis of ciprofloxacin.

16 It mainly deals in amino acid derivatives, indole, pyrrolidine, piperidine and piperazine series.

17 After being proved by an accelerating test for 6 moths, the prepared pastille has three stable indexes such as characters, microbe limitation and piperazine sulfate content, etc.

18 The baby has worms. The doctor advised him to take some piperazine.

19 Objective: To establish an HPLC method to determine the plasma concentrations of buspirone hydro-chloride (BuHCl) and its active metabolite 1 - pyrimidinyl - piperazine(1 - PP).

20 Objective To study improved synthetic method of 1 - [ ( 4 - chlorophenyl ) phenylmethyl ] - piperazine, the intermediate of cetirizine hydrochloride.

21 A series of 2, 4 - diamino - 6 - substituted piperazine quinazolines was synthesized.

22 An observational study on clinical effectiveness of tetrandrine(TD)combined with quinolyl piperazine hydroxy1 phosphate(QPHP)on 225 cases of silicosis was conducted.

23 Aim To study the synthesis and antidepressant activities of aryl alkanol piperazine derivatives .

24 The paper has reviewed the market development and related uses of piperazine.

25 The production , application, market in and foreign and derivation of piperazine is introduced.