ChromegaChiral CC4 (cellulose tris(4-chloro-3-methyl-phenylcarbamate) is another new product for high resolution chiral separations based on a new halogenated carbohydrate based chiral stationary phase. It is a modified cellulose coated on high purity, high performance spherical silica particles. The chemical modification includes the chemical bonding of 4-chloro-3 methylphenylcarbamate to cellulose. The use of cellulose modified with chlorinated phenyl groups provides a separation opportunity for many previously unresolved and poorly resolved chiral mixtures. Similar in selectivity to ChiralPak® OZ-H.
ChromegaChiral CCO F2 – The addition of a fluorine atom into a phenyl carbamate cellulose structure can be useful in promoting fluorophilic retention mechanism which can provide improved retention for fluorinated compounds (1). A fluorophilic retention mechanism can be particularly useful in medicinal chemistry and drug discovery, where more than a third of newly approved small molecule drugs contain fluorine (2). ChromegaChiral CCO F2 is a 2-Fluoro 5-methylphenyl cellulose phase which can be used in SFC or HPLC.
A baseline stabilized alkyl perfluorinated C8 – Epic FO-LB, with low bleed characteristics is well suited to the separation of trace impurities especially for halogenated analytes, lipophilic compounds and environmental samples.
A polysaccharide coated chiral stationary phase and columns which are produced using a unique production process of coating the proven chiral selector, tris-(3,5-di- methylphenyl) carbamoyl amylose on high purity silica gel. ChromegaChiral CCA columns, similar in selectivity to ChiralPak® AD, are available in 3, 5, 10, and 20 micron particle sizes enabling easy scale up from analytical to preparative scale using HPLC or SFC conditions.
Epic Diphenyl bonded phase, with reduced hydrophobicity produces HPLC columns with novel selectivity, exhibiting increased speed and resolution, utilizes strong dipole‐dipole hydrogen bonding and π‐π mechanisms for different selectivity for compounds containing double bonds or aromatic functional groups. In addition, the diphenyl arrangement of the phase can also contribute to steric selectivity allowing for an additional chromatographic interaction. Epic Diphenyl is also highly selective for proteins with aromatic side chains and may be used as a USP L11 column.
Epic HILIC-FL is useful for retention and separation of polar and non-compounds. Reversed-phase HPLC is widely used for separation of many pharmaceutical compounds. However, retention and separation of many polar analytes has proven to be a challenge. Many of these types of compounds are unretained or poorly retained on most conventional reversed-phase stationary phases, such as ODS. Fortunately, to deal with these types of analytes an alternative mode of chromatography can be utilized using polar stationary phases and highly organic mobile phases. This mode of chromatography has been utilized for many years and is referred to as “hydrophilic interaction chromatography” or HILIC. HILIC chromatography uses mobile phases containing between 5 – 20 % water for the retention of polar compounds.