Beta Mercaptolactate-Cysteine Disulfide: Analog of Cystine in the Urine of a Mentally Retarded Patient

Abstract

beta-Mercaptolactate-cysteine disulfide, a hitherto undescribed analog of cystine, was isolated from the urine of a mentally retarded patient. The propertis of this substance are described, and its structure is confirmed by mass spectrometry and by partial synthesis.