Vitamins
Vitamins are chemicals that are required in very small quantities. Most often, vitamins are required for enzyme function. A list of vitamins is given below. Most microorganisms require only 1 or 2 of these. They can make the others that they need.
p-Aminobenzoic Acid Folic Acid
Biotin Cobalamin (B12)
Lipoic Acid Niacin
Pantothenic Acid Roboflavin
Thaimine (B1) B6 Vitamins
Vitamin K Group Hydroxamates