... column (Econosil,lOp, 250 x 10 m) eluted at 2 ml/min with methanollwaterlformic acid (80/20/0.1 v/v) gave radiochemically and chemically pure compound (8) (figure ... 8- Haka M. S., Kilbourn, Watkins GL and Toorongian SA- J. Label Conlps. ... 1. Labelled Cpd Rudiopham 41, Suppl ...