obsolete 2,4-dihydroxy-6-(N'-ethyl)amino-1,3,5-triazine aminohydrolase activity (obsolete GO:0018758)
OBSOLETE. Catalysis of the reaction: 2,4-dihydroxy-6-(N'-ethyl)amino-1,3,5-triazine + H2O = CH3CH2NH2 + cyanuric acid.