Phytochemistry Letters invites rapid communications on all aspects of natural product research including: Structural elucidation of natural products Analytical evaluation of herbal medicines Clinical efficacy, safety and pharmacovigilance of herbal medicines Natural product biosynthesis Natural product synthesis and chemical modification Natural product metabolism Chemical ecology Biotechnology Bioassay-guided isolation Pharmacognosy Pharmacology of natural products Metabolomics Ethnobotany and traditional usage Genetics of natural productsManuscripts that detail the isolation of just one new compound are not substantial enough to be sent out of review and are out of scope. Furthermore, where pharmacology has been performed on one new compound to increase the amount of novel data, the pharmacology must be substantial and/or related to the medicinal use of the producing organism.