Correlative study on quality of Herba Desmodii Styracifolii Chemical constituents in anti-infective fraction of Filifolium sibiricum(I) Quality standard study on Vigna radiata Chemical constituents from Commelina communis Contents of seven indicative constituents in seven kinds of Gentiana macrophylla by UPLC Determination of seven components in flowers of Gentiana tibetica and Gentiana dendrologi by HPLC Chemical constituents from flower of Gentiana tibetica Chemical constituents in anti-infective fraction of Filifolium sibiricum (I) A new flavonoid glycoside from leaves of Vitex negundo var. cannabifolia