
Biotin, also known as D-biotin,vitamin H or coenzyme R, 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......
- Vitamin Fortification Still Favored[2012/08/25]