Title: Katayama M, et, al. Determination of progesterone and 17-hydroxyprogesterone by high performance liquid chromatography after pre-column derivatization with 4,4-difluoro-5,7-dimethyl-4-bora-3a,4a-diaza-s-indacene-3-propionohydra zide. Analyst. 1998 Nov;123(11):2339-42.
Title: Skidmore M, et, al. Labelling heparan sulphate saccharides with chromophore, fluorescence and mass tags for HPLC and MS separations. Methods Mol Biol. 2009;534:157-69.