biotin or vitamin b7 molecule. skeletal formula.

biotin molecule vitamin b7 formula atomic atoms avidin biocytin biopeiderm biotine biotinidase biotinylation c10h16n2o3s carboxylase chemical chemistry coenzyme composition compound deficiency drawing drug egg flat hair hypervitaminosis icon line medical medicine molecular neutravidin nutrient science skeletal skin streptavidin structure supplement supplementation thiophene vitamine