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Medchemexpress LLC Methoxy polyethylene glycol (mPEG) 13 carboxylic acid | 2170098-33-4 | MFCD28385486 | 95.0% | 632.74 g/mol | C28H56O15 | 1 G

Supplier: Medchemexpress LLC HYW1907521G
m-PEG13-acid is a methoxy-terminated polyethylene glycol (PEG) linker bearing a terminal carboxylic acid. It is used as a flexible, hydrophilic spacer for bioconjugation and PEGylation; the carboxylic acid can be activated for amide formation with primary amines, making it suitable for linker construction in medicinal chemistry and PROTAC synthesis.
- Provides terminal carboxylic acid for facile amide coupling to primary amines
- Methoxy-terminated (monofunctional) PEG to limit crosslinking
- Flexible, hydrophilic spacer suitable for PEGylation and linker design
- Molecular weight ≈ 632.74 g/mol; formula C28H56O15
- Common applications include bioconjugation and PROTAC linker synthesis
- Supplied as a powder; follow supplier storage and handling guidance
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