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Merck Supelco (Sigma-Aldrich) / Astec Cyclobond

Astec Cyclobond

Merck-Supelco™ (Sigma-Aldrich™) is manufacturer of some special HPLC columns for the separation of enantiomers developed by Astec in collaboration with Prof. D. Armstrong of the University of Texas at Arlington. Since 2006 Astec is part of Sigma-Aldrich™ (Merck).
 

The Astec Cyclobond® family comprises highly enantioselective chiral HPLC stationary phases based on cyclodextrins that have been bonded through covalent ether linkages to spherical, high purity silica particles.

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Chemistry Producers Term
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Astec® Cyclobond® I 2000 RSP Chiral HPLC Column, 5 µm particle size, L x I.D. 25 cm x 4.6 mm
SU-20324AST
Astec® Cyclobond® I 2000 SP Chiral HPLC Column, 5 µm particle size, L x I.D. 25 cm x 4.6 mm
SU-20224AST
Astec® Cyclobond® I 2000 AC Chiral HPLC Column, 5 µm particle size, L x I.D. 25 cm x 4.6 mm
SU-20124AST
Astec® Cyclobond® I 2000 AC Chiral HPLC Column, 5 µm particle size, L x I.D. 15 cm x 4.6 mm
SU-20123AST
Astec® Cyclobond® I 2000 Chiral HPLC Column, 5 µm particle size, L x I.D. 25 cm x 10 mm
SU-20034AST
Astec® Cyclobond® I 2000 Chiral HPLC Column, 5 µm particle size, L x I.D. 25 cm x 4.6 mm
SU-20024AST
Astec® Cyclobond® I 2000 Chiral HPLC Column, 5 µm particle size, L x I.D. 15 cm x 2.1 mm
SU-20019AST
Astec® Cyclobond® I 2000 Chiral HPLC Column, 5 µm particle size, L x I.D. 10 cm x 2.1 mm
SU-20018AST
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Technical Data

Phase-Name

Modification

Particle Size

Pore Size

End-capping

C-Content

USP

Surface

pH-Range

Tmax

Astec Cyclobond® I 2000

Underivatized, native β-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® I 2000 AC

Acetylated β-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® I 2000 DM

Dimethylated β-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® I 2000 DMP

3,5-Dimethylphenyl carbamate modified β-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® I 2000 DNP

Dinitrophenyl modified  β-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® I 2000
HP-RSP

(R,S)-Hydroxypropyl modified β-Cyclodextrin (high performance)

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® I 2000 RSP

(R,S)-Hydroxypropyl modified β-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® I 2000 SP

(S)-Hydroxypropyl modified β-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

L45

N/A

3.0−7.0

N/A

Astec Cyclobond® II

Underivatized, native γ-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

N/A

N/A

3.0−7.0

N/A

Astec Cyclobond® II AC

Acetylated γ-Cyclodextrin

5, 10 µm

100 Å

N/A

N/A

N/A

N/A

3.0−7.0

N/A

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