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ชื่อสินค้า
ื๊Sumichiral Column
รายละเอียด:
SUMICHIRAL OA columns are high-performance chiral columns for enantiomer separation by HPLC. On SUMICHIRAL OA columns direct separation of various enantiomers can be realized effectively. Enantiomeric separation is achieved from the various diastereomeric interactions such as hydrogen bonding, charge transfer and host-guest interactions, etc. SUMICHIRAL OA columns are very useful for the accurate determination of the optical purity and for the preparation of pure enantiomers of biologically active compounds such as pharmaceuticals, pesticides, perfumes.
| Amide Type: Asymmetric carbon atoms are bonded directly with CONH group | |
| OA-2000 series have a 3,5-dinitrobenzoyl group as the ?-acid and may interact with the solute molecule by charge transfer, hydrogen bonding, etc. The enantiomers of aromatic compounds, esters,carboxylic acids and alcohols may be directly separated on OA-2000 series. OA-2000 is especially effective for pyrethroidal esters, OA-2500 for carboxylic acids such as profen-drugs. | |
| Urea Type: Asymmetric carbon atoms are bonded directly with NHCONH group | |
OA-3000 series have 3,5-dinitrophenylurea group as the ?-acid and, in the reverse phase mode, promote chiral discrimination by charge transfer, hydrogen bonding, etc. In general OA-3000 series are effective for carboxylic acids, and especially for acetyl- and urethane-amino acids, dansylamino acids.
OA-3300 offers good direct separation for profen-drugs, acetyl-amino acids, BOC-amino acids and penzyl-amino acids. | |
| Cyclodextrin bonded chiral stationary phase with novel spacer | |
OA-7000 is a novel chiral stationary phase with ?A-cyclodextrin bonded to the silica gel via new type of spacer. A large number of racemates, including ketones, amines, and amino acid derivatives can be separated under reversed phase conditions.
- Sharp peaks and high theoretical plate numbers are obtained. Improved peak shape is due to the effect of hydrophilic spacer moiety which prevents secondary interactions between the silica gel and the sample molecules.
- Popular reversed phase conditions can be used.
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คำค้นหา:
column sumichiral