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4-pyr·i·dox·ic ac·id(pir'i-dok'sik as'id),
The principal product of the metabolism of pyridoxal (-COOH replaces -CHO at position 4), appearing in the urine.
4-pyr·i·dox·ic ac·id(pir-i-dok'sik as'id)
The principal product of the metabolism of pyridoxal, appearing in urine.
C8H9NO4, a crystalline acid that is the principal end product of pyridoxine metabolism, excreted in human urine.
See also: acid