泼斯唑来

产品特点：N-Trimethylsilylimidazole (TMSI) UN1993, 25 grams三甲基硅咪唑， 三甲基碘硅烷SKU: 140-25 Categories: 硅烷化试剂 ，Tag: TMSI三甲基硅咪唑 用途硅烷化试剂三甲基硅咪唑是硅烷化羟基的最强的硅烷化试剂；能够快速、平顺地与羟基和羧基发生反应。不与胺或酰胺发生反应，所以可以用于制备既含有羟基又含有氨基的化合物的多重衍生物。在存在少量水的情况下可用于硅烷化糖；当需要将糖作为糖浆剂来分析的时候是硅烷化糖的理想选择。能够衍生不被阻碍和被严重阻碍的大多数的甾类羟基。用途 用作抗菌素中间体、特强的硅烷化剂用途 高效硅烷化试剂，特别适合用于醇、酰基咪唑类的合成，在氨基存在的条件下保护羟基基团。抗菌素中间体。用途 用于合成各种酰基咪唑的重要中间体，也是合成吡藜酰胺的重要中间体；在胺功能化条件下，保护羟基的硅烷化试剂；强有力的硅烷化试剂、特别针对醇类；酰基咪唑啉的合成用途 甲硅烷基化试剂，在氨基存在的条件下保护羟基基团。抗菌素中间体。特点● UN Number： 1993

Sulfonamide-Embedded Reversed-Phase Columns for Separating Polar CompoundsAcclaim® PolarAdvantage (PA) columns feature a patented bonding chemistry that incorporates a polar sulfonamide group near the surface of the silica particle. This unique chemistry provides good hydrolytic stability and allows a single column to resolve a wide variety of polar and nonpolar analytes. The Acclaim PA is compatible with 100% aqueous mobile phases and supports LC/MS analysis. Low silanol activity for excellent peak shape with basic compounds Novel polar-embedded column chemistry Compatible with 0–100% organic solvent mobile phases High selectivity for hydrophobic aromatic compounds Wide range of applicationsConventional C18 phases are not compatible with highly aqueous mobile phases, due to dewetting. The Acclaim PA column by design has a mildly hydrophilic surface, which remains in contact with aqueous-only mobile phases, negating the problems of dewetting common with conventional reversed-phase columns.Acclaim PA columns are available both in 3 and 5 μm particle sizes and 4.6, 3.0, and 2.1 mm diameters, with an average pore diameter of 120 ?. Acclaim PA is also available in 2.2μm RSLC format (see Acclaim Rapid Separation LC (RSLC) Columns section for more details). Acclaim PA may be used for LC/MS applications. ApplicationsThe Acclaim PA column can be used in a wide range of applications in pharmaceutical, environmental, food testing, and product-quality testing. These columns also give efficient separations with good peak shapes for compounds of life science (nucleic acid and bases) and pharmaceutical interest (sulfonamides) using highly aqueous mobile phases.Acclaim PolarAdvantage: Rugged Polar-Embedded Reversed-Phase Columns for the Analysis of Polar and Nonpolar Compounds SpecificationsSurface coverage2.7 μmol/m2End-cappedYesMetal impurity (Na, Fe, Al)10.0 ppm Total Metal3.0 ppm Individual MetalPore volume1.0 mL/gAverage pore diameter120 ?Surface area300 m2/gpH range2–8Temperature60 °CStarting materialUltrapure silicaParticle size3 and 5 μParticle shapeSphericalParticle size distribution (40/90)1.3Total carbon content17%Standard particle sizes are 3 and 5 μm. Available in 2.1, 3.0, and 4.6 mm i.d. Lengths are 50, 100, and 150 mm. Capillary formats are available in 75 and 300 μm, 1.0 mm, and custom diameters, and in 50, 150, or 250 mm lengths. Microprecolumn and nano precolumn cartridges are available in several formats. Guard columns in both 2.0 and 4.3 mm sizes packed with 5 μm particles are recommended. Columns for fast LC are listed in the RSLC section.Analytical ColumnsAcclaim PA, 3 μm Analytical (2.1 x 50 mm)063174Acclaim PA, 3 μm Analytical (2.1 x 100 mm)061316Acclaim PA, 3 μm Analytical (2.1 x 150 mm)061317Acclaim 120, PA, 3μm Analytical (2.1 x 250mm)076215Acclaim PA, 3μm Analytical, (3.0 x 50mm)068972Acclaim 120, PA, 3μm Analytical (3.0 x 100mm)076214Acclaim PA, 3 μm Analyitcal (3.0 x 150 mm)063693Acclaim PA, 3 μm, Analytical, (3.0 x 250 mm)070079Acclaim PA, 3 μm Analytical (4.6 x 150 mm)061318Acclaim 120, PA, 3μm Analytical (4.6 x 100mm)076216Acclaim PA, 5 μm Analytical (4.6 x 50 mm)061319Acclaim PA, 5 μm Analytical (4.6 x 150 mm)061320Acclaim PA, 5 μm Analytical (4.6 x 250 mm)061321Guard ColumnsAcclaim PA, 5μm,2mm Guard Cartridges, (2.1 x 10mm), 2 ea requires holder 069580069691Acclaim PA, 5μm Guard Cartridges (3 x 10mm), 2ea, requires holder 069580071983Acclaim PA, 5 μm Guard Cartridges, (4.6 x 10 mm), 2 ea (use V-2 Holder)069698Acclaim SST Guard Cartridge Holder V-2069580Acclaim Guard Kit (Holder and coupler) V-2069707Guard to Analytical Column Coupler V-2074188Acclaim RSLC PA Analytical ColumnsAcclaim RSLC PA, 3 μm Analytical (3.0 x 33 mm)066274Acclaim PA, 3μm Analytical, (3.0 x 50mm)068972Acclaim RSLC PA, 3 μm Analytical (3.0 x 75 mm)066275Acclaim PA, 3 μm Analyitcal (3.0 x 150 mm)063693Acclaim RSLC PA, 2.2μm, 2.1 x 50 mm072622Acclaim RSLC PA, 2.2μm, 2.1 x 30 mm072621Acclaim RSLC PA, 2.2μm, 2.1 x 100 mm072623Acclaim RSLC PA, 2.2μm, 2.1 x 150 mm072624Acclaim RSLC PA, 2.2μm Analytical (2.1 x 250mm)074813Acclaim RSLC PA, 2.2μm, 3 x 30mm072625Acclaim RSLC PA, 2.2μm, 3 x 100mm072627Acclaim RSLC PA, 2.2μm, 3 x 50mm072626

Sulfonamide-Embedded Reversed-Phase Columns for Separating Polar CompoundsAcclaim® PolarAdvantage (PA) columns feature a patented bonding chemistry that incorporates a polar sulfonamide group near the surface of the silica particle. This unique chemistry provides good hydrolytic stability and allows a single column to resolve a wide variety of polar and nonpolar analytes. The Acclaim PA is compatible with 100% aqueous mobile phases and supports LC/MS analysis. Low silanol activity for excellent peak shape with basic compounds Novel polar-embedded column chemistry Compatible with 0–100% organic solvent mobile phases High selectivity for hydrophobic aromatic compounds Wide range of applicationsConventional C18 phases are not compatible with highly aqueous mobile phases, due to dewetting. The Acclaim PA column by design has a mildly hydrophilic surface, which remains in contact with aqueous-only mobile phases, negating the problems of dewetting common with conventional reversed-phase columns.Acclaim PA columns are available both in 3 and 5 μm particle sizes and 4.6, 3.0, and 2.1 mm diameters, with an average pore diameter of 120 ?. Acclaim PA is also available in 2.2μm RSLC format (see Acclaim Rapid Separation LC (RSLC) Columns section for more details). Acclaim PA may be used for LC/MS applications. ApplicationsThe Acclaim PA column can be used in a wide range of applications in pharmaceutical, environmental, food testing, and product-quality testing. These columns also give efficient separations with good peak shapes for compounds of life science (nucleic acid and bases) and pharmaceutical interest (sulfonamides) using highly aqueous mobile phases.Acclaim PolarAdvantage: Rugged Polar-Embedded Reversed-Phase Columns for the Analysis of Polar and Nonpolar Compounds SpecificationsSurface coverage2.7 μmol/m2End-cappedYesMetal impurity (Na, Fe, Al)10.0 ppm Total Metal3.0 ppm Individual MetalPore volume1.0 mL/gAverage pore diameter120 ?Surface area300 m2/gpH range2–8Temperature60 °CStarting materialUltrapure silicaParticle size3 and 5 μParticle shapeSphericalParticle size distribution (40/90)1.3Total carbon content17%Standard particle sizes are 3 and 5 μm. Available in 2.1, 3.0, and 4.6 mm i.d. Lengths are 50, 100, and 150 mm. Capillary formats are available in 75 and 300 μm, 1.0 mm, and custom diameters, and in 50, 150, or 250 mm lengths. Microprecolumn and nano precolumn cartridges are available in several formats. Guard columns in both 2.0 and 4.3 mm sizes packed with 5 μm particles are recommended. Columns for fast LC are listed in the RSLC section.Analytical ColumnsAcclaim PA, 3 μm Analytical (2.1 x 50 mm)063174Acclaim PA, 3 μm Analytical (2.1 x 100 mm)061316Acclaim PA, 3 μm Analytical (2.1 x 150 mm)061317Acclaim 120, PA, 3μm Analytical (2.1 x 250mm)076215Acclaim PA, 3μm Analytical, (3.0 x 50mm)068972Acclaim 120, PA, 3μm Analytical (3.0 x 100mm)076214Acclaim PA, 3 μm Analyitcal (3.0 x 150 mm)063693Acclaim PA, 3 μm, Analytical, (3.0 x 250 mm)070079Acclaim PA, 3 μm Analytical (4.6 x 150 mm)061318Acclaim 120, PA, 3μm Analytical (4.6 x 100mm)076216Acclaim PA, 5 μm Analytical (4.6 x 50 mm)061319Acclaim PA, 5 μm Analytical (4.6 x 150 mm)061320Acclaim PA, 5 μm Analytical (4.6 x 250 mm)061321Guard ColumnsAcclaim PA, 5μm,2mm Guard Cartridges, (2.1 x 10mm), 2 ea requires holder 069580069691Acclaim PA, 5μm Guard Cartridges (3 x 10mm), 2ea, requires holder 069580071983Acclaim PA, 5 μm Guard Cartridges, (4.6 x 10 mm), 2 ea (use V-2 Holder)069698Acclaim SST Guard Cartridge Holder V-2069580Acclaim Guard Kit (Holder and coupler) V-2069707Guard to Analytical Column Coupler V-2074188Acclaim RSLC PA Analytical ColumnsAcclaim RSLC PA, 3 μm Analytical (3.0 x 33 mm)066274Acclaim PA, 3μm Analytical, (3.0 x 50mm)068972Acclaim RSLC PA, 3 μm Analytical (3.0 x 75 mm)066275Acclaim PA, 3 μm Analyitcal (3.0 x 150 mm)063693Acclaim RSLC PA, 2.2μm, 2.1 x 50 mm072622Acclaim RSLC PA, 2.2μm, 2.1 x 30 mm072621Acclaim RSLC PA, 2.2μm, 2.1 x 100 mm072623Acclaim RSLC PA, 2.2μm, 2.1 x 150 mm072624Acclaim RSLC PA, 2.2μm Analytical (2.1 x 250mm)074813Acclaim RSLC PA, 2.2μm, 3 x 30mm072625Acclaim RSLC PA, 2.2μm, 3 x 100mm072627Acclaim RSLC PA, 2.2μm, 3 x 50mm072626