HPLC enantioseparation of various racemates using novel pillared homochiral MOF–silica composite as chiral stationaryphase has been successfully demonstrated.
phenylcarbamate cyclodextrin (CD) clicked chiral stationary phases (CSPs). A comparison study is herein reported for per(4‐chloro‐3‐methyl)phenylcarbamate and per(2‐chloro‐5‐methyl)phenylcarbamate β‐CD clicked CSPs (i.e., CCC4M3‐CSP and CCC2M5‐CSP). The enantioselectivity dependence on column temperature was studied in both normal‐phase and reversed‐phase mode high performance liquid chromatography
Disclosed is a composition comprising: (1) from about 0.001% to about 10% of a flavonoid compound; (2) from about 0.01% to about 15% of a vitamin B3 compound; and (3) a dermatologically acceptable single aqueous phase carrier.
Disclosed is a skin care device comprising: (1) a dermatologically acceptable preformed substrate and (2) a flavonoid compound, wherein the device comprises a liquid medium for delivering the flavonoid compound.
A cationic cyclodextrin clicked bilayer chiral stationary phase for versatile chiral separation in HPLC
作者:Jie Zhou、Bo Yang、Jian Tang、Weihua Tang
DOI:10.1039/c7nj04960a
日期:——
functionality-enhanced chiral selectivity was elucidated in different elution modes. Higher chiral resolutions were shown in the RP-elution mode due to the inclusion complexation in comparison to the NP-elution mode. The highest chiral resolution of 4.40 was achieved for 4ClPh-OPr, with 12 racemic pairs baseline separated in RP-HPLC. The addition of organic modifiers in mobile phases plays an important role