*  Reverse-phase chromatography of polar biological substances: separation of catechol compounds by high-performance liquid...
... by hydrophobic interactions between the nonpolar moiety of the solute molecules and the octadecyl-silica stationary phase. The ... Reverse-phase chromatography of polar biological substances: separation of catechol compounds by high-performance liquid ... Reverse-phase chromatography of polar biological substances: separation of catechol compounds by high-performance liquid ... Reverse-phase chromatography of polar biological substances: separation of catechol compounds by high-performance liquid ...
  http://clinchem.aaccjnls.org/content/22/9/1497.short
*  Biotage - Search Literature
Reversed-phase chromatography is typically used when you need to separate several milligrams of relatively polar compounds that ... either are not soluble in normal-phase solvents or are not compatible with bare silica because they react, stick, or both. If ... When it comes to polar organic compound purification, many chemists turn to normal-phase flash chromatography often utilizing ... Greener reversed-phase Flash Chromatography Using Acetone Instead of Acetonitrile Part No: P158 Issued year: 2017 File size: ...
  http://www.biotage.com/literature/search?q=&display_type=1&document_search%5Bproduct_page_ids%5D%5B%5D=201
*  Biotage - Search Literature
Reversed-phase chromatography is typically used when you need to separate several milligrams of relatively polar compounds that ... Basic amines are difficult to purify using traditional silica chromatography because of strong interactions between acidic ... If you are currently using reversed-phase at preparative scale, such as flash chromatography, you know the mobile phase ... Greener reversed-phase Flash Chromatography Using Acetone Instead of Acetonitrile Part No: P158 Issued year: 2017 File size: ...
  http://www.biotage.com/literature/search/15/50?search_query=
*  Biotage - Search Literature
Reversed-phase chromatography is typically used when you need to separate several milligrams of relatively polar compounds that ... Basic amines are difficult to purify using traditional silica chromatography because of strong interactions between acidic ... If you are currently using reversed-phase at preparative scale, such as flash chromatography, you know the mobile phase ... Impact of Injection Solvent Choice on Peak Shape and Resolution in Reversed-phase Flash Chromatography Part No: P140 Issued ...
  http://www.biotage.com/literature/search/8/100?search_query=
*  Biotage - Flash Accessories
Reversed-phase chromatography is typically used when you need to separate several milligrams of relatively polar compounds that ... either are not soluble in normal-phase solvents or are not compatible with bare silica because they react, stick, or both. If ... Greener reversed-phase Flash Chromatography Using Acetone Instead of Acetonitrile. As reversed-phase flash chromatography gains ... Acetonitrile as a Replacement for Methanol in Normal-phase Flash Chromatography. When it comes to polar organic compound ...
  http://biotage.com/product-group/flash-accessories
*  Biotage - Biotage ZIP® Sphere
... increased silica surface area. They are laser-welded to ensure consistent, leak-free operation even at elevated pressures. ... Reversed-phase chromatography is typically used when you need to separate several milligrams of relatively polar compounds that ... "Normal-phase silica has, on average, 50 to 60 Å pores (and a surface area of 500 m²/g). However, for small-molecule reversed- ... Greener reversed-phase Flash Chromatography Using Acetone Instead of Acetonitrile As reversed-phase flash chromatography gains ...
  http://biotage.com/product-page/biotage-zip-sphere
*  SUPELCOSIL™ LC-Si HPLC Column 5 μm particle size, L × I.D. 25 cm × 21.2 mm | Sigma-Aldrich
Analytical/Chromatography, HPLC, HPLC Columns, by Brand for Small Molecules, LC-Si silica, Polar Bonded Phases, Preparative ... Silica is frequently used in preparative chromatography due to its low operating cost and back pressure compared to reversed- ... Non-polar compounds will elute from the column first, while polar solutes show stronger interaction with the silanol groups on ... A typical mobile phase used with normal-phase silica columns consists of a hydrocarbon solvent such as hexane or heptane, mixed ...
  https://www.sigmaaldrich.com/catalog/product/supelco/54843?lang=en®ion=US
*  Biotage - Search Literature
Reversed-phase chromatography is typically used when you need to separate several milligrams of relatively polar compounds that ... The method transfer accuracy of TLC to flash is based on the TLC silica and flash silica properties. When identical, the ... When it comes to polar organic compound purification, many chemists turn to normal-phase flash chromatography often utilizing ... If you are currently using reversed-phase at preparative scale, such as flash chromatography, you know the mobile phase ...
  http://www.pyrosequencing.com/literature/search?q=&display_type=1&document_search%5Bproduct_page_ids%5D%5B%5D=63
*  Biotage - Biotage® SNAP KP-NH
Reversed-phase chromatography is typically used when you need to separate several milligrams of relatively polar compounds that ... "Normal-phase silica has, on average, 50 to 60 Å pores (and a surface area of 500 m²/g). However, for small-molecule reversed- ... Greener reversed-phase Flash Chromatography Using Acetone Instead of Acetonitrile As reversed-phase flash chromatography gains ... Acetonitrile as a Replacement for Methanol in Normal-phase Flash Chromatography When it comes to polar organic compound ...
  http://biotage.com/product-page/biotage-snap-kp-nh
*  WAT058958 - 96-well Sample collection plate 2mL 50/pkg to WAT200512 - Acrodisc, Syringe Filter, PVDF, 13 mm, 0.45 µm, Protein,...
Atlantis dC18 columns are universal, silica-based, reversed-phase C18 columns that are used for polar compound retention. The ... The 2017/18 Waters Quality Parts, Chromatography Columns and Supplies Catalog is available! Download or order your copy today. ... Silica-based polar bonded phase; can be used as less polar alternative to silica in normal-phase applications or as less ... Atlantis T3 columns are universal, silica-based, reversed-phase C18 columns that provide balanced retention of polar and ...
  http://www.waters.com/1/1/indexd10.html
*  Aqueous normal-phase chromatography - Wikipedia
In reversed phase chromatography, the most polar compounds elute first with the most nonpolar compounds eluting last. The ... Typical stationary phases for normal-phase chromatography are silica or organic moieties with cyano and amino functional groups ... In normal-phase chromatography, the least polar compounds elute first and the most polar compounds elute last. The mobile phase ... In normal-phase chromatography, the stationary phase is polar and the mobile phase is nonpolar. In reversed phase we have just ...
  https://en.wikipedia.org/wiki/Aqueous_normal-phase_chromatography
*  Cytotoxin Compounds and Methods of Isolation - Patent application
... present in the hydrophilic extracts can be fractionated by reversed phase vacuum chromatography. C-18 modified silica gel is ... Typically, reversed-phase (C-18, phenyl) columns work well with non-polar compounds, normal-phase with compounds of moderate ... However, the use of reversed-phase HPLC on the separations of even the most polar organic compounds is not uncommon. We have ... 89. The method according to claim 88, wherein said flash chromatography is gradient flash chromatography over silica. 90. The ...
  http://www.patentsencyclopedia.com/app/20090192215
*  186008051 - 445 mg/L Phosphate Check Standard to 186008149 - Atlantis dc18 OBD Prep Column, 100Å, 10 µm, 10 mm X 150 mm, 1/pkg...
Atlantis dC18 columns are universal, silica-based, reversed-phase C18 columns that are used for polar compound retention. The ... The 2017/18 Waters Quality Parts, Chromatography Columns and Supplies Catalog is available! Download or order your copy today. ... Atlantis dC18 columns are universal, silica-based, reversed-phase C18 columns that are used for polar compound retention. The ... Atlantis dC18 columns are universal, silica-based, reversed-phase C18 columns that are used for polar compound retention. The ...
  http://www.waters.com/1/1/indexd203.html
*  A Simple and Interactive Column Classification for Reversed-Phase Liquid Chromatography: The Carotenoid Test, Part I: Studied...
... or hydrophilic compounds (polar and nonpolar selectivity), the ability of compounds to penetrate the C18 chain network (steric ... the location of numerous phases made with superficially porous particles, or with hybrid silica (organic-inorganic), or with ... Carotenoid compounds can be used as probes for studying bonded stationary phases for reversed-phase liquid chromatography, such ... Acquiring knowledge about the properties of the bonded stationary phases used in reversed-phase liquid chromatography, mainly ...
  http://www.chromatographyonline.com/simple-and-interactive-column-classification-reversed-phase-liquid-chromatography-carotenoid-test-pa
*  CAPCELL CORE ADME S2.7, a Novel Adamantyl Stationary Phase, Alternative to C18 for Improved Separation of Metabolites | LCGC
... is a column packed with a novel stationary phase of superficially porous silica (core shell particle) modified by adamantyl ... is a column packed with a novel stationary phase of superficially porous silica (core shell particle) modified by adamantyl ... The C18 column is the most popular one used in reversed-phase chromatography, but has difficulty in retaining highly polar ... CAPCELL CORE ADME S2.7 (ADME) is a column packed with a novel stationary phase of superficially porous silica (core shell ...
  http://www.chromatographyonline.com/capcell-core-adme-s27-novel-adamantyl-stationary-phase-alternative-c18-improved-separation-metabolit
*  5μm TSKgel® ODS-100V Columns - TSKgel® Silica-based Reversed-Phase HPLC Columns | Sigma-Aldrich
... acidic and chelating compounds. Take advantage of the benefits of high column efficiency and symmetrical peak shapes to reduce ... water wettable and the preferred choice to retain polar metabolites. ... Combined with monomeric bonding chemistry, this silica makes the best general purpose Reversed Phase columns suitable for the ... TSKgel ODS-100V columns have a lower carbon content than ODS-100Z columns, making the bonded phase surface 100% ...
  https://www.sigmaaldrich.com/analytical-chromatography/analytical-products.html?TablePage=119477179
*  HPLC Products, Reviews and Suppliers on SelectScience
LiChrospher® CN may be used as weakly hydrophobic sorbent in reversed phase chromatography or as polar s... Read more... ... RP-phases are reliable and versatile traditionally produced spherical silica carrier with reversed phase properties. They are ... Excellent separations even with basic compounds: LiChrospher® RP-select B is a versatile reversed phase sorbent based on ... A versatile sorbent for both reversed phase and straight phase chromatography: LiChrospher® NH2 is a versatile HPLC sorbent ...
  http://www.selectscience.net/hplc-and-uhplc/product-directory/column-packings/?catID=2551&u=1C930049-FC9B-4F16-BD33-3EDAE6E188F8
*  FlashPure Cartridges | buchi.com
FlashPure stationary phases. Chemistry. Ideal for. Silica. Conventional applications, polar compounds. Alumina. Polar compounds ... Advanced User Training Chromatography - May 2018. 23.05. - 24.05. , The advanced chromatography training is designed to help ... Different normal and reversed phases *C18 with wide pores (C18-WP) for peptide applications ... Non-polar compounds. C18-WP. A high resolution Wide Pore media for large molecule purification, ideal for peptides, proteins, ...
  http://www.buchi.com/en/products/preparative-chromatography/flashpure-cartridges
*  Thin-layer chromatography - Wikipedia
For instance, if normal-phase silica gel is used as the stationary phase, it can be considered polar. Given two compounds that ... when the stationary phase is polar and the mobile phase is non-polar, the method is normal-phase as opposed to reverse-phase. ... For example, with silica gel, a very polar substance, non-polar mobile phases such as heptane are used. The mobile phase may be ... the more polar compound has a stronger interaction with the silica and is, therefore, better able to displace the mobile phase ...
  https://en.wikipedia.org/wiki/Thin-layer_chromatography
*  Reversed-phase chromatography - Wikipedia
"Reverse-phase chromatography of polar biological substances: separation of catechol compounds by high-performance liquid ... and phenyl-bonded silica (L11 - 72 columns). Note that C18, C8 and phenyl are dedicated reversed-phase resins, while cyano ... hence the term reversed-phase chromatography. Reversed-phase chromatography employs a polar (aqueous) mobile phase. As a result ... Reversed-phase chromatography (also called RPC, reverse-phase chromatography, or hydrophobic chromatography) includes any ...
  https://en.wikipedia.org/wiki/Reversed-phase_chromatography
*  Analytische und Präparative Säulen : Waters
Polymeric reversed-phase columns for applications requiring broad pH range (2-12) ideal for basic compounds as well as ... Resolve Columns Non-end capped columns providing high retention of polar compounds and high resolution. Chemistries include C18 ... The 2017/18 Waters Quality Parts, Chromatography Columns and Supplies Catalog is available! Download or order your copy today. ... different selectivity from silica-based columns. Chemistries include DE-613. BioSuite Columns HPLC columns ideally suited for ...
  http://www.waters.com/waters/de_DE/HPLC-Columns-C18-Amide-C4-C8-SEC-HILIC-Phenyl-T3-Shield-RP18-C18%2B/nav.htm?cid=511505&locale=de_DE
*  Countercurrent chromatography - Wikipedia
... phase chromatography, and the non-polar stationary phase chromatography became "reversed" phase chromatography. In reversed- ... natural micro-porous silica) and followed by modern silica gel, the thin-layer chromatography stationary phase was polar ( ... Progressively more polar eluents were then used to move polar compounds up the plate. Various alkane bonded phases were tried ... phase (e.g. aqueous mobile phase) elution, the aqueous phase is used as the mobile phase with a less polar stationary phase. In ...
  https://en.wikipedia.org/wiki/Countercurrent_chromatography
*  Hydrophilic interaction chromatography - Wikipedia
... when the silica used for the chromatographic media was particularly polar. With that exception, HILIC phases can be grouped ... The more polar compounds will have a stronger interaction with the stationary aqueous layer than the less polar compounds. Thus ... HILIC uses hydrophilic stationary phases with reversed-phase type eluents. The name was suggested by Dr. Andrew Alpert in his ... phases amide bonded phases cationic bonded phases zwitterionic bonded phases A typical mobile phase for HILIC chromatography ...
  https://en.wikipedia.org/wiki/Hydrophilic_interaction_chromatography
*  Perfluorooctanoic acid - Wikipedia
... and fluoroelastomer suspensions before further industrial processing and in ion-pair reversed-phase liquid chromatography it ... The compound is also used in "insulators for electric wires, planar etching of fused silica", fire fighting foam, and outdoor ... The "tail" is hydrophobic due to being non-polar and lipophobic because fluorocarbons are less susceptible to the London ... PFOA is also synthesized by the telomerization represented below, where the telogen is the organoiodine compound and the ...
  https://en.wikipedia.org/wiki/Perfluorooctanoic_acid
*  Chromatography - Wikipedia
... is polar (e.g. paper, silica etc.) it is forward phase chromatography, and if it is non-polar (C-18) it is reverse phase. ... Ion exchange chromatography uses a charged stationary phase to separate charged compounds including anions, cations, amino ... Methods in which the stationary phase is more polar than the mobile phase (e.g., toluene as the mobile phase, silica as the ... Reversed-phase chromatography (RPC) is any liquid chromatography procedure in which the mobile phase is significantly more ...
  https://en.wikipedia.org/wiki/Chromatography