Biotin-PEG12-NHS-500mg$857.00 Biotin-PEG12-NHS Product Catalog # Size Price (USD) Quantity Biotin-PEG12-NHS-500mg 271618-500MG 500 mg $857.00 - Biotin-PEG12-NHS-500mg quantity + For more size options, please click: Biotin-PEG12-NHS Add to cart Additional information Additional information Weight 0.0005 kg Size 500 mg For Research & Development use only. Not for testing and/or use on humans.