Enantiomeric separation of type I and type II pyrethroid insecticides with different chiral stationary phases by reversed-phase high-performance liquid chromatography

Chirality ◽  
2017 ◽  
Vol 30 (4) ◽  
pp. 420-431 ◽  
Author(s):  
Ping Zhang ◽  
Qian Yu ◽  
Xiulong He ◽  
Kun Qian ◽  
Wei Xiao ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Stationary Phases ◽  
Chiral Stationary Phases ◽  
Enantiomeric Separation ◽  
Reversed Phase ◽  
Type I ◽  
Type Ii ◽  
Pyrethroid Insecticides

scholarly journals The Separation of Cannabinoids on Sub-2 µm Immobilized Polysaccharide Chiral Stationary Phases

2021 ◽  
Vol 14 (12) ◽  
pp. 1250
Author(s):  
Takafumi Onishi ◽  
Weston J. Umstead
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Stationary Phases ◽  
Chiral Stationary Phases ◽  
Reversed Phase ◽  
Normal Phase ◽  
Elution Order ◽  
Testing Methods ◽  
Structural Isomers

The increased use and applicability of Cannabis and Cannabis-derived products has skyrocketed over the last 5 years. With more and more governing bodies moving toward medical and recreational legalization, the need for robust and reliable analytical testing methods is also growing. While many stationary phases and methods have been developed for this sort of analysis, chiral stationary phases (CSPs) are unique in this area; not only can they serve their traditional chiral separation role, but they can also be used to perform achiral separations. Given that mixtures of cannabinoids routinely contain enantiomers, diastereomers, and structural isomers, this offers an advantage over the strictly achiral-only analyses. This work presents the separation of a 10-cannabinoid mixture on several polysaccharide-based sub-2 µm CSPs with both normal-phase and reversed-phase ultra-high-performance liquid chromatography (UHPLC) conditions. Along with the separation of the mixture, appropriate single-peak identification was performed to determine the elution order and reported where applicable.

Direct Enantiomeric Separation of Flavanones by High Performance Liquid Chromatography using Various Chiral Stationary Phases

Planta Medica ◽  
1995 ◽  
Vol 61 (02) ◽  
pp. 171-176 ◽  
Author(s):  
Paola Ficarra ◽  
Rita Ficarra ◽  
Carlo Bertucci ◽  
Silvana Tommasini ◽  
Maria Calabrò ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Stationary Phases ◽  
Chiral Stationary Phases ◽  
Enantiomeric Separation

scholarly journals Separation of collagen cyanogen bromide-derived peptides by reversed-phase high-performance liquid chromatography

1980 ◽  
Vol 191 (1) ◽  
pp. 253-256 ◽  
Author(s):  
M van der Rest ◽  
H P J Bennett ◽  
S Solomon ◽  
F H Glorieux
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Reversed Phase ◽  
Low Molecular Weight ◽  
Type I ◽  
Type Ii ◽  
Linear Gradient ◽  
Cnbr Cleavage ◽  
A New Technique

A new technique for separation of the CNBr cleavage products of collagen is described. It involves the use of a 30 nm pore reversed-phase high-performance liquid chromatography column eluted with a linear gradient of acetonitrile/water containing 0.01 M-heptafluorobutyric acid. The separation of type I, type II and type III CNBr peptides is described. Resolution is particularly good for the low-molecular-weight peptides. The method is fast, quantitative and sensitive, and the complete volatility of the eluent facilitates the recovery of the separated peptides.

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