Biotin-NHS Product Catalog # Size Price (USD) Quantity Biotin-NHS271401-1G1 g$100.00 - Biotin-NHS-1g quantity + Biotin-NHS271401-5G5 g$300.00 - Biotin-NHS-5g quantity + Biotin-NHS271401-25G25 g$800.00 - Biotin-NHS-25g quantity + Add to cart Description Synonym: Biotin-N-hydroxysuccinimide ester CAS #: 35013-72-0 Molecular Formula: C14H19N3O5S Molecular Weight: 341.4