Biotin-PEG3-maleimide Product Catalog # Size Price (USD) Quantity Biotin-PEG3-maleimide271608-500MG500 mg$685.00 - Biotin-PEG3-maleimide-500mg quantity + Biotin-PEG3-maleimide271608-1G1 g$1,072.00 - Biotin-PEG3-maleimide-1g quantity + Add to cart Description Molecular Formula: C25H39N5O8S Molecular Weight: 569.7