1-Methylhydantoin is a small molecular weight polar substance the product of degradation of creatinine by bacteria. In mammals the metabolism of 1-methylhydantoin occurs via 5-hydroxy-1-methylhydantoin. In a reported human case 1-Methylhydantoin was found as an unexpected metabolite of the intelligence-affecting substance dupracetam.

(3R)-5,7-Dihydroxy-6-methyl-3-(4'-hydroxybenzyl)chroman-4-one is a natural product.

Albaspidin AA displays strong antibacterial activity against the vegetative form of P. larvae (MIC ranging from 0.168-220 uM).