The molecule is a guanidinium ion arising from protonation of the imino NH of 4-guanidinobutanamide; major species at pH 7.3. It has a role as a Saccharomyces cerevisiae metabolite. It is a conjugate acid of a 4-guanidinobutanamide.
(4-amino-4-oxobutyl)-(diaminomethylidene)azanium