Coenzyme in carboxylation reactions:
Biotin/ Vitamin H/ Coenzyme RIt is a water-soluble B-vitamin (vitamin B7).It is composed of a ureido (tetrahydroimidizalone) ring fused with a tetrahydrothiophene ring.A valeric acid substituent is attached to one of the carbon atoms of the tetrahydrothiophene ring.Biotin is a coenzyme for carboxylase enzymes, involved in the synthesis of fatty acids, isoleucine, and valine, and in gluconeogenesis.
Pyridoxine
Thiamine
Biotin
Cyanocobalamin