54127-U
2-(2-Pyridyl)ethyl Silica Gel
bed wt 100 mg, volume 1 mL, pk of 108
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About This Item
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composition
bed wt, 100 mg
packaging
pk of 108
technique(s)
solid phase extraction (SPE): suitable
volume
1 mL
matrix active group
WAX phase
application(s)
food and beverages
separation technique
ion exchange
Related Categories
General description
Sample Matrix Compatibility: Organic or aqueous Solutions
- Weak anion exchanger ideal for extracting strong basic compounds that remain charged at all pH levels
- Unlike conventional weak anion exchange SPE phases such as -NH2 (aminopropyl) that have a pKa of 9-10, a pH ≤ 7 is required to protonate or ionize the stationary phase to facilitate analyte retention. Elution is typically done by increasing the pH to 11 resulting in neutralization of the SPE phase.
- 2-(2-pyridyl)-ethyl silica gel has a pKa of ~6. Therefore, analyte elution is feasible at a pH ≥ 7. This characteristic is important for extracting analytes that are not stable (e.g. hydrolyzes) at high pHs typically required for elution when using traditional weak anion exchangers.
- Ideal for extracting acyl-coenzyme A esters from tissue.
- For more information, please see: Minkler, P.E., Kerner, J., Ingalls, S.T., Hoppel, C.L., Novel isolation procedure for short-, medium-, and long-chain acyl-coenzyme A esters from tissue, Analytical Biochemistry 376 (2008) 275–276
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Listings
Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.
JAN Code
54127-U:
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Protocols
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
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