| Description | Biotin-PEG-Biotin (MW 20000) is a bifunctional PEG derivative featuring biotin labels at each terminal end. As an enzyme co-factor, biotin facilitates protein labeling, while PEG, known for its hydrophilic nature and low toxicity, confers water solubility to the compound. |
| molecular weight | N/A |
| Storage | keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |