Classify the substances given below

Classify the substances given below.
Ptyaline, Leptin, Morphine, Riboflavin, Testosterone, Thyamin, Niacine, Sucrase, Nicotine, Amylase, Retinol, Quinine, Calciferol, Adrenaline, Tripsin.
A. The above substances can be classified into Enzymes, Hormones, Alkaloids and Vitamins. Enzymes : Ptyaline; Sucrase, Amylase, Tripsin
Hormones : Testosterone, Adrenaline, Leptin
Alkaloids : Morphine, Nicotine, Quinine
Vitamins : Riboflavin, Thyamin, Niacine, Retinol, Calciferol