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. Author manuscript; available in PMC: 2023 Feb 11.
Published in final edited form as: J Forensic Sci. 2021 Aug 30;66(6):2369–2380. doi: 10.1111/1556-4029.14877

Table 5.

Identities and results from the analysis of representative case samples. Samples originated from powders unless otherwise noted. Standard retention times and MS match scores are provided for the synthetic opioids and related compounds only. MS match scores were obtained by searching against the SWGDRUG Library (v3.6).

Case Contents Sample RT (min) Standard RT (min) %RTD (relative to standard) MS Match Score (Weighted) Opioid Peak Height (Count/s)
N-methyl Norfentanyl 2.453 2.470 0.69 % 98 1.5×107
Mannitol
Caffeine
Heroin
Cyclopropyl Fentanyl
Phenyl Fentanyl
2.196
2.427
9.207
9.740
17.811


9.214
9.767
18.022


0.08 %
0.28 %
1.17 %


99
97
95
5.8×106
1.0×106
1.1×105
6.4×105
1.4×105
Mannitol
Fentanyl
Acetyl Fentanyl
Melatonin
2.383
8.755
8.906
11.394

8.847
8.941

1.04 %
0.39 %

97
94
3.4×106
2.7×106
1.6×106
1.1×106
Mannitol
Caffeine
6-Monoacetylmorphine
FIBF
Fentanyl
Acetyl Fentanyl
Heroin
2.220
2.424
6.556
8.544
8.748
8.899
9.243


6.559
8.580
8.847
8.941
9.214


0.05 %
0.42 %
1.12 %
0.47 %
0.31 %


98
97
97
94
98
4.5×106
2.5×107
3.7×106
2.9×106
1.0×106
4.7×106
1.1×107
Fentanyl
XLR11
XLR Degradant
8.707
9.476
10.216
8.847 1.58 % 97 1.5×106
1.2×107
7.3×105
Dibutylone
Fentanyl
JWH-250
1.893
8.724
15.188

8.847

1.39 %

97
2.5×105
3.4×105
5.3×106
AP-238 5.454 5.420 0.63 % 97* 1.7×107
Phenacetin
Mannitol
Xylazine
Caffeine
Lidocaine
6-Monoacetylmorphine
Fentanyl
2.082
2.150
2.350
2.412
2.824
6.527
8.689





6.559
8.847





0.49 %
1.78 %





89
97
7.9×104
6.2×105
8.7×104
8.4×106
4.4×104
3.9×104
4.2×104
Mannitol
Caffeine
Cocaine
Acetylcodeine
6-Monoacetylmorphine
FIBF
Fentanyl
Acetyl Fentanyl
Heroin
Noscapine
2.144
2.412
3.624
6.061
6.527
8.526
8.695
8.858
9.202
21.150




6.559
8.580
8.847
8.941
9.214
21.224




0.49 %
0.63 %
1.72 %
0.92 %
0.13 %
0.35 %




98
98
97
94
98
96
4.5×105
9.4×106
3.7×104
1.6×105
3.9×105
3.5×105
6.6×105
2.4×105
5.0×106
4.0×104
N-methyl Cyclopropyl norfentanyl 2.662 2.714 1.91 % 97 2.4×106
*

AP-238 is not in the SWGDRUG Library v3.6. Comparison score was obtained using v3.9.