. Author manuscript; available in PMC: 2011 Aug 1.

Published in final edited form as: Phytochemistry. 2010 May 20;71(11-12):1305–1312. doi: 10.1016/j.phytochem.2010.04.022

Table 2.

High resolution LC-MS/MS data and quantified amounts of pertinent alkaloids from the [1-¹³C, N-¹³CH₃]-(S)-reticuline feeding experiment. Note: Feeding of doubly-labeled [1-¹³C, N-¹³CH₃]-(S)-reticuline to poppy plants leads to the formation of doubly-labeled (1-¹³C, N-¹³CH₃) laudanine and laudanosine, but singly-labeled (1-¹³C) tetrahydropapaverine and singly-labeled (1-¹³C) papaverine while thebaine is doubly-labeled (1-¹³C, N-¹³CH₃) demonstrating the branch point.

Compound	[M+H]⁺[m/z] (experimental)	[M+H]⁺[m/z] (theoretical)	Retention time [min]	Amount [nmol/g dry weight]
[1-¹³C, N-¹³CH₃]-Reticuline	332.17652	332.17669	7.78	95.30
[1-¹³C, N-¹³CH₃]-Laudanine	346.19247	346.19234	12.74	0.10
[1-¹³C, N-¹³CH₃]-Laudanosine	360.20786	360.20799	14.79	0.02
[1-¹³C]-Tetrahydropapaverine	345.18873	345.18899	11.59	0.01
[1-¹³C]-Papaverine	341.15751	341.15769	16.77	0.01
[1-¹³C, N-¹³CH₃]-Thebaine	314.16595	314.16613	12.61	4.35