mPEG8-NHS-500mg$400.00 mPEG8-NHS Product Catalog # Size Price (USD) Quantity mPEG8-NHS-500mg 281305-500MG 500 mg $400.00 - mPEG8-NHS-500mg quantity + For more size options, please click: mPEG8-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.