Simultaneous identification and quantification of canrenone and 11-α-hydroxy-canrenone by LC-MS and HPLC-UVD.
A procedure for simultaneous identification and quantification of canrenone and its biotransformed product 11-α-hydroxy-canrenone by high-performance liquid chromatography with ultraviolet detector (HPLC-UVD) and mass spectrometry (LC-MS) methods was proposed. The optimal determination variables on the HPLC-UVD or LC-MS coupled with a ZORBAX Eclipse XDB-C18 column (150 mm × 4.6 mm, 5 μm) were set as follows: detection wavelength of 280 nm, mobile phase of water and methanol gradient elution, temperature for the chromatographic column of 30°C, flow rate of mobile phase of 0.8 mL/min, sample injection volume of 5 μL, and elution time of 40 min. The MS conditions were set as follows: the flow rate of sheath gas, aux gas, and sweep gas were kept at 35 arb, 5 arb, and 0 arb, respectively. The temperature of capillary was held at 300°C, and capillary voltage was set at 30.00 V. Tube lens were performed at 100.00 V. The proposed method was validated by linearity (r² ≥ 0.9910), average recovery (94.93%, RSD1.21%), precision (RSD ≤ 1.31%), limit of detection, and limit of quantification (LOD 0.1~0.12 mg/L, LOQ 0.5~0.67 mg/L), which proved to be affordable for simultaneously determining canrenone and its bio-transformed product 11-α-hydroxy-canrenone.
School of Food and Biological Engineering, Jiangsu University, 301# Xuefu Road, Zhenjiang 212013, China.
Da-Ming
DM
Huang
Tian-Zhen
TZ
Zhang
Feng-Jie
FJ
Cui
Wen-Jing
WJ
Sun
Li-Ming
LM
Zhao
Meng-Yi
MY
Yang
Ya-Juan
YJ
Wang
D001711:Biotransformation; D002192:Canrenone / Q000031:analogs & derivatives* / Q000032:analysis; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
C571633:11-hydroxycanrenone; D002192:Canrenone