when [ 3h ] pyridoxine was administered , labeled pyridoxal , pyridoxal- and pyridoxine-phosphate were found in the intestine and liver , and labeled pyridoxine could not be detected in the peripheral blood but substantial amounts of labeled pyridoxal and pyridoxal-phosphate were found in the blood .
C0034272
pyridoxine
C0034266
pyridoxal-phosphate