Creatinine is a lactam obtained by formal cyclocondensation of creatine. It is a metabolite of creatine. It has a role as a diagnostic agent and a human metabolite. It is a lactam and an imidazolidinone. It derives from a creatine.
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Sonntag, Tessa; Kunert, Christof; Dunkel, Andreas; Hofmann, Thomas Sensory-Guided Identification of N-(1-Methyl-4-oxoimidazolidin-2-ylidene)-α-amino Acids as Contributors to the Thick-Sour and Mouth-Drying Orosensation of Stewed Beef Juice, 2010/05/26, DOI: 10.1021/jf100591c