| 1. | The purine and pyrimidine may be complexed with a sugar to produce a nucleoside .
嘌呤和嘧啶可以同一个糖复合，产生一个核苷。 |
| 2. | The substitution of a purine for a pyrimidine, or vice versa is a transversion .
嘌呤为嘧啶取代或嘧啶为嘌呤所取代，叫做颠换。 |
| 3. | The other two, thymine and cytosine, are single ring structures called pyrimidines .
另两个为胸腺嘧啶和胞嘧啶，即称为嘧啶的单环结构。 |
| 4. | Heterocylic aromatics such as pyridine and pyrimidines also give a somewhat similar set of bands in the 1600 cm region .
杂环芳香族结构类如吡啶、嘧啶类化合物在1600厘米1（625微米）区域也有相似的一组谱带。 |
| 5. | Preparation of chitosan - 5 - fluorouracil microspheres
氟尿嘧啶微球的制备 |
| 6. | Maximum residue limits of pirimiphos - methyl in food
食品中甲基嘧啶硫磷最大残留限量标准 |
| 7. | Synthesis of - d - glucoside - containing 5 - fluorouracil derivatives
氟尿嘧啶类抗肿瘤药物的合成 |
| 8. | Each 2ml contains 0 . 3g sulfamethoxydiazine sodium and 0 . 06g trimethoprim
磺胺对甲氧嘧啶钠、甲氧苄啶。 |
| 9. | Improvement of sulfadiazine tablets ' dissolubility with surfactants
表面活性剂提高磺胺嘧啶片溶出度研究 |
| 10. | Method for inspection of pirimiphos methylresidue in fruit for export
出口水果中甲基嘧啶磷残留量检验方法 |
