Spermidine powder is a polyamine compound that occurs naturally in the human body and various foods. It is commonly used as a dietary supplement for its potential health benefits, particularly in relation to aging and cellular health.

The most common form is spermidine trihydrochloride (CAS No. 334-50-9), which is a white powder with a purity specification of 99%. It is involved in regulating cellular processes such as autophagy, energy metabolism, and immune function.

Applications: Primarily used in health supplements, cosmetics, and research. It is often derived from natural sources like wheat germ extract.