mPEG11-Propyne Product Catalog # Size Price (USD) Quantity mPEG11-Propyne283904-1G1 g$525.00 - mPEG11-Propyne-1g quantity + mPEG11-Propyne283904-5G5 g$1,699.00 - mPEG11-Propyne-5g quantity + Add to cart Description Synonym: mPEG11-CH2C≡CH Molecular Formula: C26H50O12 Molecular Weight: 554.7