Electrochemical Oxidation of an Immunosuppressant, Mycophenolate Mofetil, and Its Assay in Pharmaceutical Formulations

Table 2

Effects of interferents on differential pulse voltammetric response of 20 𝜇M MMF at GCE.

Interferent	Concentration (𝜇M)	Current (𝜇A)	Signal change (𝜇A)	RSD* (%)
MMF (no interferent)	20	0.610	—	—
Ascorbic acid	200	0.596	−0.014	1.91
Glucose	400	0.618	+0.008	1.57
Magnesium stearate	200	0.619	+0.009	1.55
Talc	400	0.605	−0.005	1.46
Acacia powder	400	0.607	−0.003	2.05
Starch	200	0.603	−0.007	1.65

* Average of 5 determinations.