n.甲（烷）基

The methyl group (-CH3) is a common functional group in organic chemistry.
甲基（-CH3）是有机化学中常见的官能团。
Methyl alcohol, also known as methanol, is used as an industrial solvent and antifreeze.
甲醇，也称为木醇，被用作工业溶剂和防冻剂。
In the synthesis process, a methyl ester was formed by reacting the carboxylic acid with methanol.
在合成过程中，通过羧酸与甲醇反应生成了甲酯。
Methylphenidate is a medication commonly prescribed for attention deficit hyperactivity disorder (ADHD).
哌甲酯是一种常用于治疗注意力缺陷多动障碍（ADHD）的药物。
Methylated spirits, which contain methanol, are often used as a denatured alcohol for cleaning purposes.
含甲醇的甲酯化酒精常被用作变性酒精，用于清洁用途。
The addition of a methyl group to a compound can significantly alter its chemical properties.
向化合物中添加甲基可以显著改变其化学性质。
Methyl red is an indicator dye used in acid-base titrations.
甲基红是一种用于酸碱滴定的指示剂染料。
Methyl tert-butyl ether (MTBE) is a gasoline additive that increases octane rating.
甲基叔丁基醚（MTBE）是一种增加汽油辛烷值的添加剂。
The compound's toxicity increased after a methyl substitution at the para position.
在对位进行甲基取代后，该化合物的毒性增强。
Methyl bromide was once widely used as a fumigant in agriculture but has been phased out due to its ozone-depleting effects.
甲基溴曾经在农业中广泛用作熏蒸剂，但由于其消耗臭氧层的作用已被逐步淘汰。