36 / 63
60
V
aclavik
et al
.:
J
ournal of
AOAC I
nternational
V
ol
.
99, N
o
.
1, 2016
Analyte
Chemical Abstracts Service No.
Formula
Note
Structure
Desmethylenetadalafil
171489-03-5
C
21
H
19
N
3
O
4
—
Dimethylsildenafil
1416130-63-6
C
23
H
32
N
6
O
4
S
—
Dimethylacetildenafil
Not available
C
25
H
34
N
6
O
3
—
Dinitrodenafil
Not available
C
17
H
18
N
6
O
6
—
Gendenafil
147676-66-2
C
19
H
22
N
4
O
3
—
Gisadenafil
334826-98-1
C
23
H
33
N
7
O
5
S
—
Hydroxychlorodenafil
1391054-00-4
C
19
H
23
ClN
4
O
3
—
Hydroxythiovardenafil
912576-30-8
C
23
H
32
N
6
O
4
S
2
—
Table 2. (
continued
)
36