0340 D-BIOTIN Grade:REAGENT GRADE CAS Number: 58-85-5Synonym(s): None Molecular Weight: 244.31Molecular Formula: C10H16N2O3S Storage Condition: COLD CodeSizePriceQuantity 0340-5G A small biomolecule, 244 Daltons, that has high binding affinity to avidin and streptavidin often used to label antibodies and enzymes. Several molecules of biotin can react with a single protein molecule to increase the sensitivity at the site of detection in ELISA, immunohistochemistry and Western Blotting.