FITOTERAPIA, vol.70, no.4, pp.402-406, 1999 (SCI-Expanded)
Quantitative determination of beta,beta-dimethylacrylalkannin (1), teracrylalkannin (2) and isovalerylalkannin + alpha-methyl-n-butylalkannin (3 + 4) in Arnebia densiflora roots and extracts was established by TLC-densitometry. Data obtained by TLC were compared with those obtained by HPLC. Results showed that there were no significant differences in the determined naphthoquinone contents. (C) 1999 Elsevier Science B.V. All rights reserved.