- an amine, C8H11NO, abundant in ripe cheese as a breakdown product of tyrosine by removal of the carboxyl group (COOH).
- a colourless crystalline amine derived from phenol and found in ripe cheese, ergot, decayed animal tissue, and mistletoe and used for its sympathomimetic action; 4-hydroxyphenethylamine. Formula: (C 2 H 4 NH 2)C 6 H 4 OH
