. Author manuscript; available in PMC: 2011 Feb 26.

Published in final edited form as: J Chromatogr A. 2010 Jan 4;1217(9):1513–1521. doi: 10.1016/j.chroma.2009.12.053

Table 2.

Mass selective detector parameters for Δ9-tetrahydrocannabinol (THC), 11-hydroxy-THC (11-OH-THC), 11-nor-9-carboxy-THC (THCCOOH), cannabidiol (CBD), cannabinol (CBN) and respective deuterated analogs in human oral fluid.

Analyte	Target ion	Qualifier ions	Deans Switch cuts (min)
CBD-d3	393.3	462.3	6.45 - 6.80
CBD	390.3	458.3, 443.3	6.45 - 6.80
THC-d3^a	374.3	389.3	8.45 - 8.75
THC	371.3	386.3, 303.2	8.45 - 8.75
CBN	367.3	382.3, 310.2	9.50 - 9.90
11-OH-THC-d3	374.3	477.3	16.25 - 16.60
11-OH-THC	371.3	474.3, 459.4	16.25 - 16.60
THCCOOH-d3 ^b	425.3	593.3	5.08 - 5.45
THCCOOH ^b	422.3	590.3	5.08 - 5.45

THC-d 3 also is internal standard for CBN

Data from two-dimensional gas chromatography mass spectrometry (2D-GCMS) with negative chemical ionization; all other data from 2D-GCMS with electron ionization.