38 / 63
62
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
Norneovardenafil
358390-39-3
C
18
H
20
N
4
O
4
—
Nortadalafil
171596-36-4
C
21
H
17
N
3
O
4
—
Piperiacetildenafil
147676-50-4
C
24
H
31
N
5
O
3
—
Propoxyphenyl sildenafil
877777-10-1
C
23
H
32
N
6
O
4
S
—
Propoxyphenyl
thiosildenafil
479073-87-5
C
23
H
32
N
6
O
3
S
2
—
Propoxyphenyl
thiohydroxyhomosildenafil
479073-90-0
C
24
H
34
N
6
O
4
S
2
—
Pseudovardenafil
224788-34-5
C
22
H
29
N
5
O
4
S
—
Table 2. (
continued
)
38