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Table 3 Recovery study results in % recovered

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 at LOQ

Recovery at 50%

Recovery at 100%

Recovery at 150%

Cyanoguanidine

81.7

99.3

102.1

101.0

Melamine

105.2

101.5

101.5

99.6

Metformin HCl

98.2

92.8

92.1

92.2

Teneligliptin

90.8

98.0

99.4

98.9

Teneligliptin Impurity A

97.5

98.4

102.6

97.9

Teneligliptin Impurity B

97.1

99.6

107.8

103.9