1.
Alexandria Journal of Pharmaceutical Sciences. 1992; 6 (3): 263-265
em Inglês
| IMEMR
| ID: emr-22899
RESUMO
A simple, rapid and direct method for the determination of thymol and eugenol in volatile oils was presented. It was based on the reaction of these compounds with 3-methyl-2-benzothiazolone hydrazone hydrochloride in the presence of cerric ammonium sulfate and direct measurement at 510 nm. The results obtained were encouraging and reasonably reproducible with a relative st and ard deviation less than 1%
Assuntos
Timol/análise , Eugenol/análise , Colorimetria/métodos
2.
Alexandria Journal of Pharmaceutical Sciences. 1992; 6 (3): 269-271
em Inglês
| IMEMR
| ID: emr-22901
RESUMO
Three carvotacetones and two thiophene-acetylenes were isolated from the aerial parts of Sphaeranthus napierae Ross-Craig. Their structures were elucidated by spectroscopic analysis