Term Name:	spiroiminodihydantoin
Synonyms:	7-amino-1,3,6,8-tetraazaspiro[4.4]non-6-ene-2,4,9-trione
Definition:	An azaspiro compound that is 1,3,6,8-tetraazaspiro[4.4]non-6-ene which is substituted by oxo groups at positions 2, 4, and 9. Both enantiomers are highly mutagenic products resulting from the oxidation of guanine and 8-oxo-7,8-dihydroguanine in DNA by reactive oxygen species.
Ontology:	ChEBI [CHEBI:142623]  ( EBI )