From Galbanum beside genuin umbelliferon five umbelliferon ethers are isolated and identified as 7-{[1 R-(1alpha,2beta,4abeta,6alpha,8aalpha)] -2,6-Dihydroxy-2,5,5,8a-tetramethyldecahydronaphthalen-1-...
Two phenols have been isolated from the petroleum-ether extract of Ratanhiae radix Ph. Eur.; structure elucidation has been made by means of the following chemico-physical methods: UV, IR, (1)H-NMR, (...
Liquid chromatography-mass spectrometry (LC/MS) has become one of the most widely used analytical techniques in both qualitative and quantitative analysis of small molecules. Recently, with the increa...