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| The separation characteristics of COSMOSIL Cholester were compared with Alkyl chain group bonded silica packing materials (C18, C30). COSMOSIL Cholester shows highly molecular-shape selectivity, and well retains halide compounds. |
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Stereo selectivity
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| Due to the unique rigid structure, COSMOSIL Cholester is more retentive for the planar compound (Triphenylene) than the stereoscopic compound (o-Terphenyl). COSMOSIL Cholester has stronger stereo selectivity than the Alkyl group bonded silica packing materials (C18, C30). |
Cholester |
Traditional C18 |
Traditional C30 |
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Condition |
Column size
Mobile phase
Flow rate
Temperature
Detection |
4.6mmI.D.×150mm
Methanol : Water =90 : 10
1.0ml/min
30°C
UV254nm |
Sample:
1. o-Terphenyl
2. Triphenylene |
0.10μg
0.01μg |
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Selectivity for Polar functional group |
Cholester |
Traditional C18 |
Traditional C30 |
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Condition |
Column size
Mobile phase
Flow rate
Temperature
Detection
Sample:
1. Acetophenone
2. Methylbenzoate
3. Benzene
4. Toluene |
4.6mmI.D.x 150mm
Methanol : Water =60 : 40
1.0ml/min
30°C
UV254nm
0.05μg
0.05μg
2.00μg
2.00μg |
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Selectivity for Allyl Halide |
Cholester |
Traditional C18 |
Traditional C30 |
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Condition
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Column size
Mobile phase
Flow rate
Temperature
Detection |
4.6mmI.D.x 150mm
Methanol : Water =60 : 40
1.0ml/min
30°C
UV254nm |
Sample:
1. Toluene
2. Chlorobenzene
3. Bromobenzene |
3.3μg
3.3μg
3.3μg |
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