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100 (MH) +
m/z = 468
Relative abundance 50 107 152 187 267 312 396 414

0
100 200 300 400 500

465.3
HO
4.5e6
3.9e6
O
N CH 2
3.3e6
Intensity 2.7e6 CH 3 O C(CH 3 ) 3
HO C CH 2
2.1e6

1.5e6
396.2 414.3
9.0e5
3.0e5

100 150 200 250 300 350 400 450 500
m/z
450
100
HO
80
O
60 N CH 2
CH 3 O
HO CCH 3
40
C
CH 3 CH 4
20
418 468

100 200 300 400 500
Figure 2.5 Mass spectra of buprenorphine obtained with LC/ESI/MS/MS
(upper), LC/ESI/MS (middle), and LC/APCI/MS (lower). (Reprinted from Bogusz
M.J., Opioid Agonists. In Bogusz M.J., Ed., Forensic Science, Vol. 2, Handbook
of Analytical Separations. Elsevier, Amsterdam, 2000, 3. Copyright 2000, with
permission from Elsevier Science.)

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