2019-02-132019-02-132004-09REZENDE, Kênnia Rocha; BARROS, Sílvia Berlanga de Moraes. Quantification of 4-nerolidylcatechol from Pothomorphe umbellata (Piperaceae) in rat plasma samples by HPLC-UV. Revista Brasileira de Ciências Farmacêuticas, São Paulo, v. 40, n. 3, p. 373-380, Jul./Sept. 2004. 1516-9332http://repositorio.bc.ufg.br/handle/ri/17057The oral dosages formulations from Pothomorphe umbellata (Piperaceae) can only be therapeutically evaluated after establishing 4-nerolidylcatechol (4-NRC) pharmacokinetic profile in plasma. For that purpose, a unique analytical method validation using HPLC-UV detection was developed for analysis of rat plasma samples. The animals received 10 mg/kg b.w. of 4-NRC i.v.. Analytical conditions were set with C18 column, methanol: acetonitrile: water (62:20:18) as mobile phase, and a flow rate of 1.6 mL/min. The assay was linear from 1.0 - 80.0 mcg/mL. The recovery procedure was performed by liquid-liquid extraction showing quantitative extraction (106.4±8.7%). Limit of Quantification (LOQ) was found to be 1.0 mcg/mL. Interassay precision and accuracy ranged from values of 14.4-3.0% and 24.0– 0.2%, respectively. Recovery after liquid-liquid extraction was found to be 106.5 ± 3%. The method is simple and reliable with total run time of less than 15 min.engAcesso Aberto4-NerolidylcatecholPothomorphe umbellataHPLC-UVLiquid-liquid extraction4-NerolidilcatecolExtração líquido-líquidoPothomorphe umbellataCLAE-UVArtigo10.1590/S1516-93322004000300013