Fentanyl
437-38-7

3-Methylbutyrfentanyl (3-MBF)
97605-09-9

3-Methylfentanyl
42045-86-3

(4-fluorofentanyl, pFF)
90736-23-5

a-Methylfentanyl
alpha-Methylfentanyl)
79704-88-4

Acetylfentanyl
3258-84-2

Acrylfentanyl
82003-75-6

Benzoylfentanyl
2309383-15-9

Butyrfentanyl
1169-70-6

Benzoylfentanyl
2309383-15-9

Cyclopentylfentanyl
2088918-01-6

Acrylfentanyl
82003-75-6
79279-03-1

Furanylfentanyl (Fu-F)
101345-66-8

3-Methylbutyrfentanyl (3-MBF)
97605-09-9

4-Fluorobutyrylfentanyl
4-FBF
244195-31-1

3-Methylfentanyl
42045-86-3

4-fluorofentanyl, pFF)
90736-23-5

α-Methylfentanyl
79704-88-4

Acetylfentanyl
3258-84-2