Piperazine phosphate; phosphoric acid; Pincets; Pinrou; Piperazine;piperazine; 14538-56-8; phosphate; Pinsirup; Anthalazine phosphate; piperazine;phosphoric acid; 

piperacillin;(2s,5r,6r)-6-[[(2r)-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid;