AOAC SPADA February 2015 Meeting Book

Analyte

CAS No.

Formula

Structure

Tadalafil (Sold under the brand names Cialis and Adcirca .)

171596-29-5

C 22

H 19

N 3

O 4

Thiohomosildenafil

479073-80-8

C 23

H 32

N 6

O 3

S 2

Udenafil (Sold under the brand name Zydena.)

268203-93-6

C 25

H 36

N 6

O 4

S

Vardenafil (Sold under the brand names Levitra , Staxyn , and Vivanza .)

224785-90-4

C 23

H 32

N 6

O 4

S