AOACSPDSMethods-2017Awardsv2

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V aclavik et al .: J ournal of AOAC I nternational V ol . 99, N o . 1, 2016  63

Table 2. ( continued )

Analyte

Chemical Abstracts Service No.

Formula

Note

Structure

Pyrazole N -demethyl  sildenafil

139755-95-6

C 21

H 28

N 6

O 4

S

—

Pyrazole N -demethyl  sildenafil- d 3

Not available

C 21

H 25

D 3

N 6

O 4

S

IS

Sildenafil N -oxide

1094598-75-0

C 22

H 30

N 6

O 5

S

—

Thioaildenafil

856190-47-1

C 23

H 32

N 6

O 3

S 2

—

Thiosildenafil

479073-79-5

C 22

H 30

N 6

O 3

S 2

—

Zaprinast

37762-06-4

C 13

H 13

N 5

O 2

—

a  — = Additional evaluated analytes.