And one thing I want to tell you to start out with is something about this c h 3 group here.

有一点需要告诉大家的是,从这个一个碳原子和三个氢原子的组合开始。

麻省理工公开课 - 化学原理课程节选

You'll notice that a lot of different kinds medications do you have chlorine in them, you'll see that c l group.

你会注意到很多不同类型的药物都含有氯,你会看到这类氯。

麻省理工公开课 - 化学原理课程节选

So I show that here, so in green, you have what's called a carboxcylic acid group, a c o o h, which gets converted by s o c l 2 to a c double bond o c l or an acid chloride.

我在这里用绿色表示，我们所说的羧酸族化合物，碳，氧，氧，氢，它被亚硫酰氯转化为,一个碳氧双键与碳氯单键组成的酰氯。

麻省理工公开课 - 化学原理课程节选

Any time you see a c h 3, this means a methyl group.

一旦你看到一个，C，H，3，的组合，这就意味着一个甲基。

麻省理工公开课 - 化学原理课程节选