j

Large Crystal of Valerenic Acid

  • Nov 08, 2017
  • Type: post

We take great pride in making sure our references standards are of the highest possible purity. We often go the extra mile to see just how pure our material is, and what better a way than to grow the largest possible crystal. Most recently, we managed to grow an individual crystal of Valerenic acid that exceeded 1 gram. All it takes is a bit of knowhow and a whole lot of patience, but what yo... READ MORE

Efficient, Baseline Separation of Pyrethrins by Centrifugal Partition Chromatography

This was presented at Prep 2017 in Philadelphia on July 17th, 2017.AbstractPyrethrins are natural pesticides present in the oil extracted from the flowers of Chrysanthemum cinerariaefolium. These six structurally related esters are potent neurotoxins that interfere with sodium channels in neurons of insects. With low toxicity to mammals and an exceptionally safe environmental profile, there is an ... READ MORE

Efficient, Baseline Separation of Pyrethrins by Centrifugal Partition Chromatography

Congratulations to our former employee Alan Wong on the hard work and R&D he invested in developing this method and getting it published. Abstract Pyrethrins are natural pesticides present in the oil extracted from the flowers of Chrysanthemum cinerariaefolium. They are potent ion-channel neurotoxins which have higher selective toxicity for insects compared to mammals. These phytochemicals hav... READ MORE

Efficient, Baseline Separation of Pyrethrins by Centrifugal Partition Chromatography

AbstractPyrethrins are natural pesticides present in the oil extracted from the flowers of Chrysanthemum cinerariaefolium. They are potent ion-channel neurotoxins which have higher selective toxicity for insects compared to mammals. These phytochemicals have an exceptionally safe environmental profile and are an attractive natural alternative to organophosphate insecticides currently used in agric... READ MORE

Trimeric and Tetrameric A‑Type Procyanidins from Peanut Skins

AbstractPeanut skins are a rich source of oligomeric and polymeric procyanidins. The oligomeric fractions are dominated by dimers, trimers, and tetramers. A multistep chromatographic fractionation led to the isolation of four new A-type procyanidins of tri- and tetrameric structures. The structures of the new trimers were defined by NMR, electronic circular dichroism, and MS data as epicatechin-(... READ MORE

© Copyright 2016 Planta Analytica LLC