Vitamins (water soluble) - Trivial Chemical Name/ Derivative Coenzyme & functional groups transferred

Question 1

Vitamin B1

Answer 1

Thiamine
Coenzyme: Thiamine pyrophosphate (TPP) for aldehyde transfer

Question 2

Vitamin B2

Answer 2

Riboflavin
Coenzyme: FAD & FMN for transfer of H+/electrons in redox reactions

Question 3

Vitamin B6

Answer 3

Pyridoxine, pyridoxamine
Coenzyme: Pyridoxal phosphate (PLP) for amino transfer

Question 4

Vitamin B3

Answer 4

Niacin; Nicotinic acid
Coenzyme: NAD/NADP for transfer of H+/electrons in redox

Question 5

Niacinamide

Answer 5

Nicotinamide

Question 6

Folic acid

Answer 6

Pteroylglutamic acid
Coenzyme: Tetrahydrofolate for transfer of one-carbon components esp. formyl

Question 7

Vitamin B12

Answer 7

Cyanocobalamin
Coenzyme: 5’-Deoxyadenosyl cobalamin for methyl transfer and intramolecular rearrangements

Question 8

Biotin

Answer 8

Coenzyme: Biotin-lysine complexes (Biocytin) for ATP-dependent carboxylation and carboxyl group transfer

Question 9

Vitamin B5

Answer 9

Pantothenic acid
Coenzyme: Coenzyme A for acyl group transfer

Question 10

Vitamin C

Answer 10

Ascorbic acid; transfer of hydroxyl groups