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Table 4 Recovery study results in µg/mL

From: Impurity profiling method development and validation of metformin hydrochloride and teneligliptin hydrobromide hydrate in their combination tablet dosage form by using RP-HPLC with UV/PDA detector

Analytes name

Recovery in µg/mL at LOQ

Recovery in µg/mL at 50%

Recovery in µg/mL at 100%

Recovery in µg/mL at 150%

Added

Recovered

Added

Recovered

Added

Recovered

Added

Recovered

CYN

0.051

0.042

2.545

2.527

5.090

5.197

7.635

7.711

Melamine

0.053

0.056

2.640

2.680

5.280

5.359

7.920

7.868

MTF HCl

0.058

0.0565

2.875

2.668

5.750

5.296

8.625

7.952

TNG

0.215

0.195

1.075

1.054

2.150

2.137

3.225

3.190

TNG Imp. A

0.221

0.216

1.105

1.087

2.210

2.268

3.315

3.245

TNG Imp. B

0.022

0.208

1.073

1.072

2.145

2.312

3.218

3.332