I found this paper:
Analysis of Flonicamid and Its Metabolites in Dried Hops by Liquid Chromatography–Tandem Mass Spectrometry
Matt J. Hengel and Marion Miller
Journal of Agricultural and Food 2007 55 (20), 8033-8039
The authors stated the following in their materials section:
"Flonicamid (CAS Registry No. 158062-67-0, 99.7%, purity, Lot No. 272785), 4-trifluoromethylnicotinic acid (TFNA, CAS
Registry No. 158063-66-2, 99.4% purity, Lot No. 404593), 4-trifluoromethylnicotinamide (TFNA-AM, CAS Registry No. 158062-71-6,
100% purity, Lot No. 275591), and N-(4-trifluoromethylnicotinoyl)glycine (TFNG, CAS Registry No. 207502-65-6, 99.4% purity, Lot No
404594) were acquired from FMC Agricultural Products Group (Princeton, NJ)."
Hope that helps.