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Chiral Technologies: CROWNPAK

 

Daicel CROWNPAK columns from Chiral Technologies contain a chiral crown ether as chiral selector, which is coated onto a 5um silica support. They can be used for the enantiomeric separation of amino acids and other small molecules containing a primary amino group near the chiral centre. The CROWNPAK CR(-) column gives the reversed elution order compared to the CR(+) column.

 

Acidic eluents such as perchloric acid at pH 1 to 2 are used as standard with these columns. To shorten the retention time of hydrophobic samples, the addition of methanol (up to 15%) has proved to be effective. The columns can be operated at temperatures between -5°C and 50°C.

 

CROWNPAK material characteristics:

Phase typeParticle sizepH rangeTemperature
range (°C)
USP code

CROWNPAK CR (+)

5

 1-9

-5 to 50

L66

CROWNPAK CR (-)

5

 1-9

-5 to 50

  

CROWNPAK ordering information:

Phase typeColumns dimensionsPart no.Guard column
(10 x 40 mm)

CROWNPAK CR (+)

150 x 4.0 mm

 27714

27711

CROWNPAK CR (-)

150 x 4.0 mm

 28714

27711

 

 

 

 

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