(±)-beta-Hydroxythiofentanyl HCl
(±)-beta-Hydroxythiofentanyl-13C6 HCl
4-ANPP
4-ANPP-13C6
4-Fluoro fentanyl-13C6
4'methyl acetyl fentanyl HCl
4'methyl acetyl fentanyl-13C6 HCl
Acetyl fentanyl
Acetyl fentanyl-13C6
Acryl fentanyl HCl
Acryl fentanyl-13C6 HCl
Butyryl fentanyl
Butyryl fentanyl-13C6
Cyclopropyl fentanyl HCl
Cyclopropyl fentanyl-13C6 HCl
Fentanyl-13C6
Furanyl fentanyl HCl
Furanyl fentanyl-13C6 HCl
Methoxyacetyl fentanyl HCl
Methoxyacetyl fentanyl-13C6 HCl
para-Fluorobutyryl fentanyl (PFBF)
para-Fluorobutyryl fentanyl-13C6
para-Fluorofentanyl
Remifentanil HCl
Remifentanil-13C6 HCl
U-47700-13C3, 15N2
Valeryl Fentanyl- 13C6 HCl
Valeryl fentanyl HCl
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(±)-cis-3-Methylfentanyl HCl
3-Methyl fentanyl-13C6 HCl
Carfentanil Oxalate
Carfentanil-13C6 oxalate
Benzylfentanyl HCl
Benzylfentanyl-13C6 HCl
Fentanyl
Norfentanyl Oxalate
Norfentanyl-13C6 oxalate
U-47700
U-48800 HCl
U-48800-13C3, 15N2 HCl
U-49900
U-49900-13C5
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Norcarfentanil Oxalate
Norcarfentanil-13C6 oxalate
Isotonitazene
Isotonitazene-13C6
NPP
NPP-13C6
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