Ald-Ph-PEG4-Boc

• CAT Number: I015851
• CAS Number: 1807518-64-4
• Molecular Formula: C23H35NO8
• Molecular Weight: 453.53
• Purity: ≥95%
• Synonyms: tert-butyl 3-[2-[2-[2-[2-[(4-formylbenzoyl)amino]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
• InChI: InChI=1S/C23H35NO8/c1-23(2,3)32-21(26)8-10-28-12-14-30-16-17-31-15-13-29-11-9-24-22(27)20-6-4-19(18-25)5-7-20/h4-7,18H,8-17H2,1-3H3,(H,24,27)
• InChIKey: LWNKMVXZTVDYHO-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)CCOCCOCCOCCOCCNC(=O)C1=CC=C(C=C1)C=O

Ald-Ph-PEG4-Boc（Cat No.:I015851）is a heterobifunctional PEG linker incorporating an aldehyde-functionalized phenyl group and a Boc-protected amine, separated by a PEG₄ spacer. The aldehyde group enables site-specific conjugation through oxime or hydrazone bond formation with aminooxy or hydrazide groups, producing stable linkages under mild conditions. The Boc-protected amine can be deprotected to release a reactive primary amine, facilitating further bioconjugation or crosslinking. The PEG₄ chain enhances solubility, flexibility, and reduces steric hindrance. This versatile reagent is widely used in bioconjugation, drug delivery research, and advanced material engineering.