Why cannot vitamin C be stored in our body?

Vitamin C(ascorbic acid due to extensive –H bonding with water due to the presence of –OH group) is a water-soluble vitamin in contrast to vitamin A, D, E and K which are fat soluble. Also, humans can not synthesize it due to the lack of specific enzyme and it is rapidly absorbed from the intestine. Because it is water-soluble , it is not stored in our body to a significant amount but is readily excreted in the urine.