Simultaneous Identification and Quantification of Canrenone and 11-α-Hydroxy-Canrenone by LC-MS and HPLC-UVD

Table 2

Accuracy of HPLC-UV method for canrenone.

Samples	Original (g)	Added (g)	Found (g)	Recovery^a (%)	Mean Recovery (%)	RSD^b (%)
1	0.0014	0.0097	0.0107	95.88
2	0.0015	0.0097	0.0104	91.75
3	0.0014	0.0097	0.0106	94.85	94.93	1.21
4	0.0013	0.0097	0.0108	97.94
5	0.0014	0.0097	0.0105	93.81

^aRecovery (%) = ((canrenone amount found−original canrenone amount in sample solution)/canrenone added amount) × 100%.
^b(RSD%) = (S.D./mean) × 100%.