using an aminopropyl bonded silica packing and a mixture of 85 % acetonitrile and 15 % 0.005 m tetrabutylammonium phosphate as the mobile phase , caffeine , heroin , acetylcodeine , 6-acetylmorphine , codeine , and morphine are separated from each other and are accurately quantified .
C0009214
codeine
C0026549
morphine