Biotin-PEG4-NHS-5g$1,200.00 Biotin-PEG4-NHS Product Catalog # Size Price (USD) Quantity Biotin-PEG4-NHS-5g 271611-5G 5 g $1,200.00 - Biotin-PEG4-NHS-5g quantity + For more size options, please click: Biotin-PEG4-NHS Add to cart Additional information Additional information Weight 0.005 kg Size 5 g For Research & Development use only. Not for testing and/or use on humans.