3d image of allantoin skeletal formula

allantoin 5-ureidohydantoin glyoxyldiureide diureide glyoxylic acid metabolic nucleic acids urate oxidase uricase metabolite metabolism biosynthesis cycle mechanism pathway path catabolism biosynthetic intermediate biogenesis substrate synthesis derivative bioprecursor enzyme endogenous contractor bacteria cosmetics toiletries keratolytic moisturizing desquamation extracellular matrix atopic dermatitis toothpaste mouthwash oral hygiene shampoos lipsticks anti-acne sun care skin benefits biomarker oxidative stress purine senescence 3d