Vitamin B1 O-(Succinic Acid-d4)-N-Hydroxy Succinimide is deuterium labeledVitamin B1 O-Succinic Acid-N-Hydroxy Succinimide (V675620), which is a useful synthetic intermediate and a related compound of thiamine(T344185).Thiamine or vitamin B1 is an essential nutrient required for carbohydrate metabolism and it is also involved in nerve function.