... Namely, it was dissolved in 19.2 ml of a mixture of ether, n—hexane and acetonitrile (25 : 10: 3), and a 500 [21 aliquot of the solution was applied to the HPLC (C) 1992 Pharmaceutical Society of Japan NII—Electronic Library Service Page 2. ... Page 3. 2570 Vol. 40, No. ...