Part No: AN139.v2Issued year: 2019File size: 0.51mbFile type: pdf
In this application note, we show the separation of a fourcomponent
mixture using a semi-preparative, slurry-packed
reversed phase HPLC column with 15 μm spherical silica
particles and a Biotage® Selekt instrument.
Part No: AN061Issued year: 2012File size: 0.63mbFile type: pdf
Acetone is successfully used as solvent in normal-phase flash chromatography when used with an Isolera™ Spektra flash purification system. The new λ-All detection and baseline correction features provide compound detection at all wavelengths in the detector’s range while minimizing any baseline drift due to solvent UV absorption.
Part No: P186Issued year: 2018File size: 0.2mbFile type: pdf
With the growing popularity and use of mass-directed flash
chromatography to purify specific compounds, it is important to understand that the sample’s compounds may not be detected as expected (e.g. M+H or M-H ions) because they may fragment or form adducts in the mass detector. This is true with both synthetic and natural product research.
Part No: PPS410Issued year: 2015File size: 0.7mbFile type: pdf
User Case: Professor Roger Strömberg, Karolinska Institutet. One of Professor Strömberg’s projects at Karolinska Institutet
involves the synthesis of artificial nucleases and PNAzymes. In
2013, his research group acquired a Biotage® Initiator+ Alstra™
peptide synthesizer for making PNAs and peptides.
Part No: PPS409Issued year: 2015File size: 1.61mbFile type: pdf
RIKEN is Japan’s largest research organization with 3,400
researchers from more than 50 countries. The chemists in RIKEN’s
Sugiyama Laboratory use EVOLUTE® EXPRESS solid-phase extraction
plates from Biotage in the analysis of clinical trial samples
for pharmacokinetic studies.
Part No: AN147Issued year: 2020File size: 1.28mbFile type: pdf
The use of reversed-phase high performance flash chromatography
(HPFC) is gaining traction as a strategy to reduce the
overall purification time for synthetic peptides. Herein we
present data demonstrating that a focused gradient, with a
slope reminiscent to that commonly used for HPLC-mediated
peptide purification, can indeed be used in HPFC to improve the
final purity of a desired peptide with minimal time invested in
Part No: PPS432Issued year: 2016File size: 0.4mbFile type: pdf
Customer Case: Hitachi, Ltd. Healthcare Innovation Center. Hitachi’s R&D group has developed a new method for analyzing pharmacodynamics in cultured cells, in a study aimed at improving the pass rate in clinical trials. Mr. Ryosuke Takahashi tells the story.
Part No: Issued year: 2013File size: 0.43mbFile type: pdf
User report: ISOLUTE SLE+. Shin Nippon Biomedical Laboratories, Ltd. use ISOLUTE® SLE+ to prepare biological samples for pharmacokinetic testing as part of a drug discovery and development program. We had the chance to speak with Mr. Mitsuhiko Kawabata and Ms. Akiko Toda of the pharmacokinetics group.
Part No: T82Issued year: 2009File size: 0.16mbFile type: pdf
Oil & Grease standards come in pre-measured Teflon tubes of 10 mL each. Each tube contains 20 mg of n-Hexadecane and Stearic Acid for a total concentration of 40 mg. Care must be taken upon the introduction of the spiking solution to the sample bottle.
Part No: PPS406Issued year: 2015File size: 1.09mbFile type: pdf
Tokyo based PeptiDream Inc. is a company specializing in non-standard peptide therapeutics containing non-standard amino acids, and conducts research and development of new drug candidates. PeptiDream uses the peptide synthesizers Syro I and Biotage® Initiator+ Alstra™ for the synthesis of various kinds of peptides to support drug discovery and development.
Part No: AN049-HORIssued year: 2009File size: 0.74mbFile type: pdf
The DryVap® Concentrator System was intentionally designed to provide enhanced recoveries of semivolatile organic compounds, such as those found in EPA Method 8270. Its unique design of using an internal immersion heater vs. an external water bath, vacuum, and a sparge gas which is directed onto the surface of the solvent during the final stages of the evaporation process, allows the DryVap® System to achieve very good recoveries for a variety of tests.
Part No: AN042Issued year: 2003File size: 0.08mbFile type: pdf
Thin-layer chromatography (TLC) is a commonly used method development tool for flash purification. Product mixtures separated using TLC generally can be purified by flash chromatography using the identical solvent system. The method transfer accuracy of TLC to flash is based on the TLC silica and flash silica properties. When identical, the equation 1/Rf = CV holds, where Rf is the retention factor of a compound separated by TLC, and CV is the number of column volumes required to elute a compound. Cartridge loading capacity is based on the difference in CV (DCV) between two adjacent compounds.
Part No: Issued year: File size: 0.62mbFile type: pdf
The utilization of bound reagents for the solution phase synthesis has become an important tool in synthesis of biologically active molecules. The disadvantage of this technique is the relative slow rate of reaction. Microwave irradiation has been used to overcome this problem and increase rate of reaction of solid-assisted solution phase synthesis. This presentation covers developing efficient and robust strategies for the preparation of an array of cyclic tertiary amines using microwave irradiation in conjunction with bound reagents and scavengers such as MP-cyanoborohydride.