Vitamins can be classified as “fat-soluble” or “watersoluble.” Fat-soluble vitamins can be stored in fatty tissues, whereas water-soluble vitamins can be excreted in the urine.

(a) The structures of some vitamins are given in Fig. P8.48 Using their structures to guide you, classify each as fat soluble or water soluble and explain.

(b) For which type of vitamin would an overdose be more dangerous? Why?

Transcribed Image Text:

HO. HO HO H H HO vitamin C (ascorbic acid) CH₂ Figure P8.48 OH R CH3 vitamin D3 (R = a hydrocarbon group) H H₂C. H₂C vitamin A H HO vitamin B₂ (riboflavin) CH₂OH ΝΗ H fil OH H OH OH HOCH₂, CH₂OH vitamin B6 (pyridoxine) LOH CH3