. Author manuscript; available in PMC: 2012 Jun 1.

Published in final edited form as: J Pharm Biomed Anal. 2011 Mar 5;55(3):487–493. doi: 10.1016/j.jpba.2011.01.040

Table 1.

Retention times, multiple-reaction monitoring transitions and compound specific settings for analytes and internal standard

Compound	Retention time (min)	MRM transition (m/z)	Declustering potential (V)	Collision energy (V)
Alfentanil	2.1	417.0 / 197.2	46	35
Alfentanil-d₅	2.1	422.0 / 197.2	46	39
Midazolam	2.5	326.0 / 291.0	71	47
Midazolam-d₄	2.5	330.0 / 295.0	66	45