1·The invention relates to a method for preparing adefovir dipivoxil dual oxygen methyl pivalate from adefovir.
本发明涉及从阿德福韦制备阿德福韦酯二氧新戊酸双氧甲基酯的方法。
2·Trimethylaluminum(TMA) was synthesized by reaction of triethylaluminium (TEA) with methyl bromide on iron-stibonium complex catalyst.
以三乙基铝（茶）和甲基溴为原料，在铁-锑络合物催化剂上反应合成了三甲基铝（TMA）。
3·The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.
工作小组关注甲基化作用，是指一个甲基群被放在DNA序列的胞嘧啶上面。
4·Thiomersal does not contain methyl mercury, which is a naturally-occurring compound and whose toxic effects on humans have been well studied.
硫柳汞不含有甲基汞，后者是一种自然产生的化合物，其对人类的有毒影响已得到充分的研究。
5·Small chemicals called methyl groups bind to the DNA, helping to determine which genes become active.
被叫做甲基群的小东西附着在DNA上，用以帮助决定哪些基因激活。