Term Name:	leupeptin(1+)
Synonyms:	leupeptin, leupeptin cation, N-acetyl-L-leucyl-N-[(2S)-5-{[amino(iminio)methyl]amino}-1-oxopentan-2-yl]-L-leucinamide
Definition:	A guanidinium ion that is the conjugate acid of leupeptin, arising from protonation of the guanidino group; major species at pH 7.3.
Ontology:	ChEBI [CHEBI:192489]  ( EBI )