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

Taking them with juice is a better idea, as the acid and vitamin C in juice may help with the absorption.

CNN: Are vitamins and supplements effectively absorbed?

"It's not as aggressive a procedure" as traditional surgery but it isn't as effective based on patient satisfaction and elimination of acid in the esophagus, says Hiran C.

WSJ: New Surgical Option for Heartburn

However, exercise had a much greater effect on animals that were also given the supplement amino acid L-argenine, and antioxidant vitamins C and E.

BBC: Exercise is good for health