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About InertSustain Cyano

 

Batch-to-Batch Reproducibility Comparison

The data below show that InertSustain Cyano columns deliver consistent batch-to-batch reproducibility, including with strong basic compounds such as Dextromethorphan or Berberine.

 
Retentivity comparison chromatograms: Inertsil ODS2 vs ODS3 vs ODS-SP (HPLC C18)

Highly Inert Packing Material

The data below show that InertSustain Cyano columns provide symmetric peaks for strong bases and chelating compounds, supporting stable chromatograms for qualitative and quantitative analysis.

Figure 1:  Comparison of Peak Shapes using Strong Basic Compounds

Cyano Column – Comparison of Peak Shapes using Strong Basic Compounds]

Figure 2: Comparison of Peak Shape using Strong Chelating Compound

Cyano Column Comparison of Peak Shape using Strong Chelating Compound

Highly Stable Chemistry for Normal-Phase Separations

Although InertSustain Cyano columns are shipped in reversed-phase solvents, they can also be used for normal-phase separations after equilibration with ethanol or 2-propanol before analysis.

Cyano Column Comparison of Peak Shape using Strong Chelating Compound

A New Selectivity Option

The InertSustain Cyano column uses multiple retention mechanisms that can achieve separations where a C18 or Phenyl column may not. It provides a different separation pattern and reduced retention for hydrophobic compounds compared with C18 or Phenyl columns.

Cyano Column Comparison of Peak Shape using Strong Chelating Compound
 
 
 

InertSustain Cyano Applications

 
 

Analysis of Nortriptyline (Data No. LB610-0806)

Chromatogram — Analysis of Nortriptyline
 

Conditions
Column : InertSustain Cyano 5 µm, 250 × 4.6 mm I.D. (Cat. No. 5020-89277)
Eluent : A) CH3CN   B) CH3OH   C) Buffer*
A/B/C = 40/43/17, v/v/v
Flow Rate : 2.5 mL/min
Col. Temp. : 40 °C
Detection : UV 239 nm
Inj. Vol. : 10 µL
Analyte : 1. Nortriptyline 380 mg/L
Theoretical plates (1) : 7,988
Symmetry factor (1) : 1.10

* Dissolve 1.63 g of monobasic potassium phosphate in 1 L of water, adjust with 1 N potassium hydroxide to pH 6.7.

 
 

Analysis of Sertraline (Data No. LB611-0806)

Chromatogram — Analysis of Sertraline
 

Conditions
Column : InertSustain Cyano 5 µm, 250 × 4.6 mm I.D. (Cat. No. 5020-89277)
Eluent : A) CH3OH   B) 0.1% H3PO4 in H2O
A/B = 50/50, v/v
Flow Rate : 1.5 mL/min
Col. Temp. : 30 °C
Detection : UV 210 nm
Inj. Vol. : 10 µL
Analyte : 1. Sertraline 50 mg/L
Symmetry factor (1) : 1.24

 
 

Analysis of Tetracaine (Data No. LB612-0806)

Chromatogram — Analysis of Tetracaine
 

Conditions
Column : InertSustain Cyano 5 µm, 250 × 4.6 mm I.D. (Cat. No. 5020-89277)
Eluent : A) CH3CN   B) Buffer*   A/B = 30/70, v/v
Flow Rate : 2.0 mL/min
Col. Temp. : 40 °C
Detection : UV 280 nm
Inj. Vol. : 10 µL    Sample : Standard
Analyte : 1. Tetracaine 100 mg/L
Theoretical plates (1) : 9,679    Symmetry factor (1) : 1.16

* Prepare 0.01 M of dibasic ammonium phosphate in water, and adjust with phosphoric acid to pH 3.0.

 
 

Analysis of Warfarin Potassium (Data No. LB502-0843)

Chromatogram — Analysis of Warfarin Potassium
 

Conditions
System : GL7700 HPLC system
Column : InertSustain Cyano 5 µm, 250 × 4.6 mm I.D. (Cat. No. 5020-89277)
Eluent : A) CH3CN   B) H2O   C) CH3COOH   A/B/C = 32/68/1, v/v/v
Flow Rate : 1.5 mL/min
Col. Temp. : 40 °C
Detection : UV 260 nm (PD7752 PDA Detector)
Inj. Vol. : 20 µL    Sample : Standard
Analyte : 1. Warfarin 500 mg/L
Theoretical plate number : 10,833 (≧ 8,000)    Symmetry factor : 1.10 (≦ 1.5)    RSD of the area (%) (n = 6) : 0.06 (≦ 1.0)

 
 

View All Application Notes for InertSustain Cyano HPLC Columns

 
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