Chiral Normal Phase Hplc
Chiral Normal Phase Hplc - Related Videos
04:47
Ring-Shaped Micropatterning Cell Chirality Assay: An In Vitro Technique to Determine Multicellular Chirality Based on Cell Alignment on Ring-Shaped Micropatterns
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2025
In this video, we describe a cell chirality assay to determine the alignment bias of cells in a confined geometric boundary such as a ring micropattern. Chirality is an inherent property of most cell types and is determined by genetic and environmental factors. Knowing the chirality of a normal cell population can help to screen drug-treated cells.
12:58
High-Performance Liquid Chromatography (HPLC)
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2023
Source: Dr. Paul Bower - Purdue University High-performance liquid chromatography (HPLC) is an important analytical method commonly used to separate and quantify components of liquid samples. In this technique, a solution (first phase) is pumped through a column that contains a packing of small porous particles with a second phase bound to the surface. The different solubilities of the sample components in the two phases cause the components to move through the column with different average...
02:25
Chirality
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2023
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot. Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
02:30
Chirality in Nature
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2023
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid. The...
09:10
An Efficient and Rapid HPLC-QQQ-MS Method for the Quantitation of Tropane Alkaloids in Medicinal Plants
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2026
This study developed a high-performance liquid chromatography coupled with triple quadrupole mass spectrometry (HPLC-QQQ-MS) method to identify and quantify tropane alkaloids (hyoscyamine, anisodamine, scopolamine) in Anisodus tanguticus. The method proved rapid, accurate, and reliable for high-throughput analysis of medicinal plants.
FAQs
The chiral selector forms interactions with each enantiomer, but those interactions do not have equal strength because the molecules differ in three-dimensional arrangement. One enantiomer may therefore remain associated with the stationary phase longer than the other. This unequal retention creates separate chromatographic signals, allowing the two forms to be resolved and assessed individually.
Under normal-phase conditions, the relatively nonpolar mobile phase carries the sample across a polar stationary phase. This arrangement keeps the analytes in contact with the stationary phase while they move through the column. Differences in interaction strength with the chiral selector then translate into different retention times, which supports enantiomeric separation.
Distinct retention times indicate that the enantiomers interact differently with the chiral stationary phase. The separation does not arise from different molecular connectivity, since the enantiomers share that feature, but from their different spatial arrangements. When their signals are sufficiently distinct, researchers can evaluate stereochemical composition rather than treating the sample as a single undifferentiated compound.
A sample is introduced into the chromatographic system, where the mobile phase carries it through the polar chiral stationary phase under normal-phase conditions. The resulting retention behavior is observed as separate signals for the enantiomers. Researchers use the retention times and corresponding measurements to determine whether separation occurred and to assess the sample's stereochemical composition.
Chiral Normal Phase Hplc can separate the enantiomeric forms of a compound and support their quantification. Comparing the measured amounts provides information about enantiomeric purity, meaning the relative representation of the desired stereochemical form. This is useful for evaluating chiral drug compounds, synthetic intermediates, amino acids, and other analytes developed or studied in bioengineering.
Researchers can apply the method during synthetic or biocatalytic processes to determine whether stereochemical control is being maintained. Analysis of samples from these processes can reveal the presence and relative amounts of enantiomers. That information helps track process performance and supports decisions about consistency during pharmaceutical or biomaterial development.
The chromatographic results provide evidence about stereochemical composition, enantiomeric purity, and product consistency. In pharmaceutical development, they can help evaluate chiral drug compounds and their intermediates. In biomaterial development, the same type of analysis can help verify that a product or process maintains the intended stereochemical profile across development activities.