Part No: TN127Issued year: 2003File size: 0.28mbFile type: pdf
ISOLUTE HAX mixed-mode SPE sorbent is based on a combination of strong anion exchange and non-polar chemistries. Acidic drugs are retained by two primary retention mechanisms. This allows a rigorous interference elution regime to be used to elute interferences retained by either non-polar or anion exchange interactions alone. Only analytes with both non-polar and acidic characteristics are extracted usign the ISOLUTE HAX sorbent, providing an extremely pure final extract.
Part No: Issued year: 2004File size: 0.31mbFile type: pdf
1.We have developeda general method for synthesizing Diaryl Ethers from both electron richand electron deficient phenols.
2.We have showedthat with our instrumentation we have removedscalabilityas alimiting factor for the ”bench” chemist.
3.We have also developeda new cooling technique on the Advancer that dramaticallyshortens coolingtimes. For ethanol: 180 ºC to 70 ºC within less than 10 seconds..
Part No: P020Issued year: 2008File size: 0.16mbFile type: pdf
The trend pharma industry is clearly to speed up the process from lead identification to selection of candidate drug. One of the major limitations is the availability of larger amounts typically hundreds of grams, of the potentially active substance to be further investigated
Part No: P012Issued year: 2006File size: 0.22mbFile type: pdf
The use of palladium-catalysts in the synthesis of fine chemicals, pharmaceutical intermediates and active pharmaceutical ingredients (APIs) has become quite common in the last few decades. The number of palladiumcatalyzed reactions (both achiral and chiral) available to chemists has provided access to more complex structures in fewer steps and with less waste. An unfortunate side effect of using palladium is the potential for palladiumcontaining impurities to remain in the desired compound after isolation. This is an especially significant problem for the pharmaceutical industry since there is a low limit for heavy metal impurities allowed in the drug substance.
Part No: AN072.v2Issued year: 2013File size: 0.39mbFile type: pdf
Here we present the separation capabilities of a new type of designed adsorbent, RENSA® Boronate. This new resin has affinity for diols and α-hydroxycarboxylic acids and is able to extract those target compounds with high efficiency and selectivity.
Part No: Issued year: 2010File size: 0.26mbFile type: pdf
• Solid-Phase Peptide Synthesis (SPPS) is still often
faced with difficulties in the assembly of long and
‘difficult’ sequences, e.g. due to aggregation and
steric hindrance giving rise to incomplete reactions.
These problems have only partly been solved by
new coupling reagents and solid supports.
• Precise microwave heating has emerged as one
new parameter for SPPS, in addition to coupling
reagents, resins, solvents etc.
Part No: AN091Issued year: 2014File size: 0.63mbFile type: pdf
Three protected carbohydrate derivatives, 1,2:5,6-Di-O-Isopropylidene-
α-D-glucofuranose, Methyl 4,6-O-Benzylidene-α-D-glucopyranose, and
1,2-O-Isopropylidene-α-D-glucofuranose were successfully separated and
detected, using a Biotage® SNAP KP-Sil cartridge on a Biotage Isolera™ system
with the Biotage® Evaporative Light-Scattering Detector (ELSD) attached.
Part No: AN089Issued year: 2014File size: 0.68mbFile type: pdf
Three sterols, (+)-dihydrocholesterol, β-estradiol-3-benzoate, and
β-estradiol were successfully separated, detected, and isolated using a
Biotage® SNAP KP-Sil cartridge attached to a Biotage Isolera™ One system connected to Biotage® Evaporative Light-Scattering Detector (ELSD).
Part No: Issued year: 2007File size: 3.19mbFile type: pdf
Biotage bietet ein umfassendes Jahresservice-Konzept, inhaltlich aller Ersatzteile, Arbeit vor Ort und empfohlener vorbeugender Wartung. Holen Sie sich den Prioritätsstatus für alle Service-Anrufe durch spezialisierte Außendiensttechniker von Biotage und mit
Original-Biotage-Ersatzteilen (wesentlich zur Aufrechterhaltung der optimalsten Geräteleistung).
Part No: Issued year: 2007File size: 0.05mbFile type: pdf
PS-TsNHNH2 and ISOLUTE® Si-TsNHNH2 are solid supported equivalents of p-toluenesulfonyl hydrazide. These reagents are both excellent scavengers for aldehydes and ketones and are generally used in threefold excess with respect to the limiting carbonyl species. A catalytic amount of acetic acid (5-10%) may be required for ketones, hindered substrates or for scavenging in certain solvents (e.g. DMF).
Part No: P022Issued year: 2008File size: 0.09mbFile type: pdf
Microwave-assisted esterification of protected amino acid derivatives was performed using alkyl halides and polystyrene supported TBD1,2 (Fig. 1) as base. The preferred solvents were THF or acetonitrile. The products were obtained in good yields and high purity. Short reaction time, 10 minutes, and easy work-up, filtration and evaporation, constituted a convenient procedure. Benzyl, allyl, phenacyl, and alkyl esters, all important and commonly used derivatives in peptide synthesis, were synthesised.