BVit- VB1(thiamin) + CH2—N CH2—CH20H NH 硫胺素的化学结构 .Contains sulfur and nitrogen group Destroyed by alkaline and heat o Coenzyme: Thiamin pyrophosphate(TPP)一 BVit- VB1 (thiamin) •Contains sulfur and nitrogen group •Destroyed by alkaline and heat •Coenzyme: Thiamin pyrophosphate (TPP)