β-p-Hydroxyphenylhydracrylic acid as a urinary constituent in a patient with gastrointestinal disease

摘要: Abstract In this paper the isolation of β - p -liydroxyphenylhydracrylic acid from urine a patient with severely impaired intestinal amino resorption is described. The compound has been identified by mass spectrometry. Mass spectrometry and gas chromatography parameters are given. behaviour on twodimensional thin-layer (or paper) chromatograms illustrated. -hydroxyphenylhydracrylic aciduria must be very rare, even in patients resorption. Probably it reflects high influx -coumaric -hydroxyphenylpropionic acids (both bacterial metabolites non-absorbed tyrosine) under exceptional conditions heavily loaded β-oxidation MCT administration.