From: New spectrofluorimetric methods for determination of melatonin in the presence of N-{2-[1-({3-[2-(acetylamino)ethyl]-5-methoxy-1H-indol-2-yl}methyl)-5-methoxy-1H-indol-3-yl]- ethyl}acetamide: a contaminant in commercial melatonin preparations
Method
Second derivative method
PCR method
PLS method
Reference method24
Mean ± SDa
100.51 ± 2.663
100.99 ± 1.483
100.79 ± 1.479
100.59 ± 3.379
n
5
t test (2.306)
0.041
0.247
0.124
-
F (6.388)
1.610
5.187
5.220