• Synonyms：
  Fluorescein-PEG-Thiol
  
• Purity：
  ≥90%
• Recommended Storage Condition：
  Store at -5°C,keep in dry and avoid sunlight.
• Uses：
  Applicated in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

FITC-PEG-SH is a linear bifunctional PEG reagent with fluorescein dye. The FITC group in FITC-PEG-SH is usually used for staining and tracer labeling of biomolecules and nanoparticles after PEGylation.

The free sulfhydryl groups, SH, and cysteine contained in FITC-PEG-SH can selectively react with maleimide and new metal surfaces (including gold, silver, etc.) to form stable thioether bonds. The thiol group has a high affinity for the gold surface and is widely used for the modification of gold nanoparticles or gold films.

Cited Publications

This PEG derivative has been cited in peer-reviewed scientific publications. Browse the references below to learn more.

1. Hwira Baek, Eun-Cheol Lee, Marta Gonçalves, Yue Tong Ong, Saetbyeol Jeon, Young-Ju Jang, Sungbeen Kim, Yong Joo Seok, Seungpyo Hong, Suk Ho Bhang, Jin Woong Kim, Antioxidant biosurfactant-integrated stem cell nanovesicles for fibroblast reprogramming and membrane-protective wound healing, Chemical Engineering Journal, 2026, 182254, ISSN 1385-8947, https://doi.org/10.1016/j.cej.2026.182254
2. A Versatile, Biocompatible Additive for Spatiotemporal Volumetric Photografting of Biochemical and Mechanical Cues in Diverse Hydrogel Matrices, Marc Falandt, Camille Bonhomme, Sammy Florczak, Tina Vermonden, Paulina Nunez Bernal, Riccardo Levato, bioRxiv 2026.01.20.700570; doi: https://doi.org/10.64898/2026.01.20.700570
3. ​​Kim, Jiwoo & Choi, Jun & Kim, Jeongmin & Kim, Jihyun & Roh, Yoonho & Bong, Ki. (2025). Oxygen-free discontinuous dewetting in a degassed mold for anisotropic colloidal hydrogel microparticle synthesis. Lab on a Chip. 26. 10.1039/D5LC00928F. 
4. ​Bryan, J. B., & Lin, C. Microwave-Assisted Aqueous Synthesis of Gelatin-Norbornene for Hydrogel Crosslinking and Bioprinting. Advanced Materials Technologies, e01361. https://doi.org/10.1002/admt.202501361
5. ​Kalinovsky, D. V., Kholodenko, I. V., Svirshchevskaya, E. V., Kibardin, A. V., Ryazantsev, D. Y., Rozov, F. N., Larin, S. S., Deyev, S. M., & Kholodenko, R. V. (2023). Targeting GD2-Positive Tumor Cells by Pegylated scFv Fragment–Drug Conjugates Carrying Maytansinoids DM1 and DM4. Current Issues in Molecular Biology, 45(10), 8112-8125. https://doi.org/10.3390/cimb45100512

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