Kamerling J P, Aarsen G, de Bree P K, Duran M, Wadman S K, Vliegenthart F G, Tesser G I, van der Waarde K M
Clin Chim Acta. 1978 Jan 2;82(1-2):85-91. doi: 10.1016/0009-8981(78)90029-3.
The isolation, identification, and quantitative determination of an unusual urinary dipeptide, Nepsilon-(beta-aspartyl)lysine, is described, as well as its synthesis. This compound was observed in children in various disease states, but without any correlation with a particular symptom. Its origin is discussed.