Welcome to Iris Biotech
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Thank you very much for your interest in our products. All prices listed on our website are ex-works, Germany, and may attract customs duties when imported.
You may/will be contacted by the shipping company for additional documentation that may be required by the US Customs for clearance.
We offer you the convenience of buying though a local partner, Peptide Solutions LLC who can import the shipment as well as prepay the customs duties and brokerage on your behalf and provide the convenience of a domestic sale.Continue to Iris Biotech GmbHSend request to US distributor
PEG derivatives, the pioneers for drug delivery, are available from pure, monodisperse, discrete molecules with short chain lengths to long polydisperse, allowing for regio-specific chemical conjugation with small molecules, proteins, peptides, and biopharmaceuticals through their broad variety of terminal chemical groups available. They can be attached to different positions – most prominent candidates are amino groups of solvent accessible lysines, N-termini, or thiol functions of available cysteines. Rarely used is the C-terminus or carboxylic groups from aspartate and glutamate. Besides, PEG can also serve as spacer or cross linker between two moieties.