A pyridine derivative, C18H11NO3, occurring especially in cereals, yeast, liver, and fish and serving as a coenzyme in amino acid synthesis.

• 吡哆醇吡啶的衍生物，c18h11no3，尤其出现于谷类，酵母，肝脏和鳞中，作为氨基酸合成作用中的辅酶