Journal: Analytical and Bioanalytical Chemistry

Article Title: Targeted and untargeted detection of fentanyl analogues and their metabolites in hair by means of UHPLC-QTOF-HRMS

doi: 10.1007/s00216-020-02994-x

Figure Lengend Snippet: Full list of the MS/MS transitions for analytes and internal standards

Article Snippet: Fentanyl and the deuterated internal standards (norfentanyl- d 5 , fentanyl- d 5 ) were produced by Cerilliant (Round Rock, Texas, USA).

Techniques:

Journal: Neuropharmacology

Article Title: Evidence for nonlinear accumulation of the ultrapotent fentanyl analog, carfentanil, after systemic administration to male rats

doi: 10.1016/j.neuropharm.2019.04.002

Figure Lengend Snippet: MRM transitions, cone voltages, collision energies and retention times.

Article Snippet: Norcarfentanil and norfentanyl-d 5 were acquired from Chiron AS (Trondheim, Norway).

Techniques:

Journal: ACS Omega

Article Title: LC-MS/MS-Based Method for the Multiplex Detection of 24 Fentanyl Analogues and Metabolites in Whole Blood at Sub ng mL –1 Concentrations

doi: 10.1021/acsomega.7b01536

Figure Lengend Snippet: LC-MS/MS ion chromatogram of a high calibrator. Each peak represents the quantitative transition ion (qualitative transition ion not shown). Fentanyl analogue and internal standard peak identities: (1) norfentanyl- d 5 , (2) norfentanyl, (3) furanyl norfentanyl, (4) remifentanil acid, (5) butyryl norfentanyl, (6) remifentanil, (7) acetyl fentanyl, (8) acetyl fentanyl- 13 C 6 , (9) alfentanil, (10) U-47700, (11) acetyl fentanyl 4-methylphenethyl, (12) acrylfentanyl, (13) fentanyl, (14) AH-7921, (15) fentanyl- d 5 , (16) 4-ANPP, (17) para -methoxyfentanyl, (18) furanyl fentanyl, (19) despropionyl para -fluorofentanyl, (20) (±)- cis -3-methyl fentanyl, (21) butyryl/isobutyryl fentanyl, (22) carfentanil, (23) para -fluorobutyryl/ para -fluoroisobutyryl fentanyl, (24) sufentanil, and (25) valeryl fentanyl. Separation between butyryl/isobutyryl and para -fluoroisobutyryl fentanyl/ para -fluorobutyryl fentanyl was not achieved due to isomerism.

Article Snippet: Internal standards were acetyl fentanyl- 13 C 6 , fentanyl- d 5 , and norfentanyl- d 5 from Cerilliant.

Techniques: Liquid Chromatography with Mass Spectroscopy

Journal: ACS Omega

Article Title: LC-MS/MS-Based Method for the Multiplex Detection of 24 Fentanyl Analogues and Metabolites in Whole Blood at Sub ng mL –1 Concentrations

doi: 10.1021/acsomega.7b01536

Figure Lengend Snippet: Quantitative ion chromatogram of an accidental overdose case from late 2016. Abbreviations are as follows: (1) norfentanyl- d 5 , (2) norfentanyl, (8) acetyl fentanyl 13 C 6 , (10) U-47700, (13) fentanyl, (15) fentanyl- d 5 , (16) 4-ANPP, (18) furanyl fentanyl, (19) despropionyl para -fluorofentanyl, (21) butyryl/isobutyryl fentanyl, and (23) para -fluorobutyryl/ para -fluoroisobutyryl fentanyl. Inset shows the low-response count region of IMF analogues.

Article Snippet: Internal standards were acetyl fentanyl- 13 C 6 , fentanyl- d 5 , and norfentanyl- d 5 from Cerilliant.

Techniques:

Journal: ACS Omega

Article Title: LC-MS/MS-Based Method for the Multiplex Detection of 24 Fentanyl Analogues and Metabolites in Whole Blood at Sub ng mL –1 Concentrations

doi: 10.1021/acsomega.7b01536

Figure Lengend Snippet: Precursor Ions along with Their Qualitative and Quantitative Transitions for All IMF Analogues ( N = 24) and Internal Standards a

Article Snippet: Internal standards were acetyl fentanyl- 13 C 6 , fentanyl- d 5 , and norfentanyl- d 5 from Cerilliant.

Techniques: