On January 4, 2001, Preiss, Michael published a patent.HPLC of Formula: 86393-32-0 The title of the patent was Hydrates of Ciprofloxacin and procedures for their production. And the patent contained the following:
The subjects of the invention are a procedure for the production of hydrates of Ciprofloxacin, new hydrates of Ciprofloxacin, medicaments containing them, and their use for the production of medicaments. The experimental process involved the reaction of 1-Cyclopropyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid hydrochloride hydrate(cas: 86393-32-0).HPLC of Formula: 86393-32-0
The Article related to ciprofloxacin hydrate production, Pharmaceuticals: Formulation and Compounding and other aspects.HPLC of Formula: 86393-32-0
Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics