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Table 3 List of quinolones’ chromatographic retention factors (k)*

From: QSRR modeling of the chromatographic retention behavior of some quinolone and sulfonamide antibacterial agents using firefly algorithm coupled to support vector machine

Compound name

pH 2.2

pH 3.5

pH 5.2

pH 6.5

pH 8.2

Gatifloxacin

1.580

1.603

1.576

1.566

1.635

Lomefloxacin

1.405

1.560

1.501

0.920

1.035

Moxifloxacin

1.558

1.606

1.592

1.749

1.840

Nadifloxacin

2.121

2.148

2.114

2.036

1.685

Norfloxacin

1.191

1.162

1.192

1.158

0.384

Ofloxacin

1.032

1.176

1.559

1.836

1.885

Ciprofloxacin

1.142

1.363

1.294

1.153

0.646

Gemifloxacin

1.557

1.576

1.578

1.584

1.633

Enrofloxacin

1.622

1.567

1.591

2.468

1.973

Danofloxacin

1.370

1.551

1.572

1.822

1.668

Sparfloxacin

1.560

1.576

1.567

2.486

1.987

  1. *Dead time = 2.9 min