Part No: AN857Issued year: 2016File size: 2.29mbFile type: pdf
This application note describes a protocol for the extraction of 1,25 di-OH Vitamin D2 and 1,25 di-OH Vitamin D3 metabolites from serum using supported liquid extraction prior to LC-MS/MS detection.
A calibration range between 5 and 500 pg/mL is demonstrated using a starting volume of 0.25 mL of serum. Sensitivity is maximized through the use of a simple PTAD derivatization and formation of a methylamine complex.
The method can be easily automated using the Biotage Extrahera. Details of the automated procedure and data comparing manual and automated method performance are included.
Part No: Issued year: 2011File size: 0.16mbFile type: pdf
Molecularly Imprinted Polymers (MIPs) are highly cross-linked polymers with selective binding sites engineered to contain recognition elements in defined positions1. MIPs have been developed for a large variety of small molecules, peptides, carbohydrates and even proteins. The schematic 0of a MIP site.
Part No: P055Issued year: 2013File size: 0.7mbFile type: pdf
Free urinary cortisol levels can be an indicator of a variety of disorders, such as Cushing Syndrome. This poster presents a simple method for the extraction of cortisol from urine demonstrating good recoveries and low ion suppression. LC-MS/MS analysis was performed using a Waters 2795 Liquid Handling Unit coupled to a Quattro Ultima Pt triple quadrupole MS using electrospray ionization, operated in the MRM mode. Supported liquid extraction method development resulted in recoveries greater than 90% for cortisol spiked urine. Calibration curves constructed using this method from 25-2000 ng/mL, demonstrated excellent linearity with coefficients of determination greater than 0.99.
Cortisol, Stress, Cushin's Syndrome, SLE, Supported Liquid Extraction, SPE, LLEMSACL, San Diego, 2013
Part No: Issued year: 2004File size: 0.39mbFile type: pdf
•Metal-mediated [2 + 3] cycloaddition to coordinated nitriles
-- synthesis of new transition metal complexes
-- synthesis of new heterocycles
-- enantioselective synthesis of heterocycles
role of microwaves?
• Platinum-catalysed cycloisomerisation of alkynes
-- Synthesis of Taxol-like compounds
-- highly efficient and atom economic chemistry
role of microwaves?
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: 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.