| 摘要 |
Oxaliplatin with a low content of accompanying impurities originating from its preparation which contains, by weight, at most 0.01%, preferably less than 0.001%, of alkali metals, at most 0.0005%, preferably less than 0.0002%, of silver, and at most 0.01%, preferably less than 0.001%, of nitrates. A method for preparation of the said oxaliplatin resides in that a suspension of (SP-4-2)-dichloro-[(1R,2R)-1,2-cyclohexanediamine-N,N']platinum(II) in water is treated with silver nitrate, then, after removal of the solid phase, the obtained solution is treated with quaternary ammonium iodide of the formula (R)<SUB>4</SUB>NI, the separated solid phase is removed and the obtained solution is treated with oxalic acid, and the separated oxaliplatin is isolated, washed with water and a polar organic solvent or their mixture, dried, recrystallised from water, washed with water and polar organic solvent or their mixture, and dried. |
