Chlorophyll is an organometallic complex with Mg as central metal. It’s formula is C₅₅H₇₂MgN₂O₆.

It is a hormone secreted from thyroid gland. It controls various biochemical reactions involving burning of proteins, carbohydrates, fats to release energy.

Here 1^st carbon atom becomes asymmetric giving two isomers which differ in the configuration of the asymmetric carbon. These two isomers are called as anomers.