Serotonin Serotonin (5-hydroxytryptamine) is a monoamine neurotransmitter. Serotonin is manufactured in the brain and the intestines. The majority of the body's serotonin, between 80-90%, can be found in the gastrointestinal tract. It is thought that serotonin can affect mood and social behaviour, appetite and digestion, sleep, memory and sexual desire and function.

Formula:C10H12N2OMolar mass:176.2151g/molMelting point:121 CBoiling point:416 CIUPAC ID:3-(2-aminoethyl)-1H-indol-5-ol5-Hydroxytryptamine