Bogan J A, Marriner S
J Pharm Sci. 1980 Apr;69(4):422-3. doi: 10.1002/jps.2600690416.
A simple assay for benzimidazole in plasma and GI fluids using high-performance liquid chromatography was developed. The benzimidazoles were extracted using ether and were chromatographed with methanol-ammonium carbonate mixtures as the eluting solvents. Benzimidazole was detectable in 4 ml of plasma or GI fluid to a limit of 20 ng/ml.
