A High-Performance Liquid Chromatography:Chemiluminescence Method for Potential Determination of Vardenafil in Dietary Supplement

Table 1

The effect of v/v% of methanol and ethanol on 𝑡_𝑅, S/N and P.

v/v%	20^a	25^a	30^a	40^b	45^b	50^b	55^b	60^b
𝑡𝑅 (min)	13.2	6.4	3.8	10.0	5.4	3.1	2.8	2.1
S/N	7.1	8.3	10.0	3.1	6.1	5.2	4.9	3.9
P (Mpa)	9.8	12.3	16.1	10.8	11.1	10.3	10.0	10.3

^aEthanol
^bMethanol