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Phenylcarbamic acid esters

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1

Medchemexpress LLC Boc-NH-PEG2 (PROTAC Linker 11) | 139115-91-6 | 205.25 | 5 G
SDP

The product is a polyethylene glycol (PEG)-based linker used in the creation of PROTACs, which are molecules designed to selectively degrade target proteins. These PROTACs function by utilizing the intracellular ubiquitin-proteasome system.

  • It is a polyethylene glycol-based molecule.
  • It is used in the synthesis of protein degraders.
  • The purity is very high at 99.78%.
  • It is supplied as a colorless to light yellow liquid.
  • It comes with a data sheet, safety data sheet, and certificate of analysis.
  • It can be stored for long periods, up to three years in pure form at -20°c.

ENCOMPASS_PREFERRED
2

Medchemexpress LLC Boc-NH-PEG7-acid | 2055044-68-1 | C22H43NO11 | 100 MG
SDP

Boc-NH-PEG7-acid is a polyethylene glycol (PEG)-based PROTAC linker. This compound is primarily used in the synthesis of PROTACs, which are designed to selectively degrade target proteins by exploiting the intracellular ubiquitin-proteasome system.

  • Used as a PROTAC linker
  • PROTACs contain two ligands connected by a linker
  • Ligands bind to an E3 ubiquitin ligase and a target protein
  • Exploits the ubiquitin-proteasome system
  • Selectively degrades target proteins

ENCOMPASS_PREFERRED
3

Medchemexpress LLC Tert-butyl N-[2-[2-[2-[2-(2-aminoethoxy)ethoxy]ethoxy]ethoxy]ethyl]carbamate | 811442-84-9 | MFCD16619339 | ≥98.0% | 336.42 g/mol | C15H32N2O6 | 5 G
SDP

Boc-NH-PEG4-CH2CH2NH2 is a Boc-protected, 5-unit polyethylene glycol diamine linker used as a cleavable linker in the synthesis of antibody-drug conjugates (ADCs) and as a PEG-based linker for PROTAC and other chemical biology applications.

  • Boc-protected PEG4 diamine structure.
  • Cleavable 5-unit PEG linker suitable for ADC synthesis.
  • High purity supported by COA (NMR ≥98.0%).
  • Available in multiple package sizes, including 5 G.
  • Storage: protect from light; storage stability varies with solvent.

ENCOMPASS_PREFERRED
4

Medchemexpress LLC Tert-butyl 1-bromo-3,6,9,12-tetraoxapentadecan-15-oate | 564476-32-0 | MFCD22574808 | 98.0% | 385.29 g/mol | C15H29BrO6 | 5 G
SDP

Br-PEG4-C2-Boc is a cleavable 4-unit polyethylene glycol (PEG) linker containing a bromoacetamido reactive handle and a Boc-protected terminal group, used in the synthesis of antibody-drug conjugates, PROTACs, and other bioconjugates in research settings.

  • Cleavable PEG4 linker suitable for conjugation chemistry.
  • Bromo group provides a reactive handle for alkylation and coupling.
  • Boc-protected terminal group enables controlled deprotection after conjugation.
  • High purity suitable for synthetic research applications.
  • Provided as a solid in multiple pack sizes for flexible workflows.

ENCOMPASS_PREFERRED
5

Medchemexpress LLC Boc-NH-PEG4 | 106984-09-2 | MFCD07779195 | 99.5% | 293.36 | C13H27NO6 | 5 G
SDP

Boc-NH-PEG4 is a Boc-protected polyethylene glycol (PEG4) linker used as a spacer in PROTAC, ADC, and other bioconjugation syntheses. It provides a four-unit PEG spacer with a Boc-protected amino terminus that enables orthogonal deprotection and downstream functionalization. The material is supplied as a colorless to light yellow liquid and is suitable as a building block in small-molecule conjugates.

  • Four-unit PEG spacer for controlled linker length.
  • Boc-protected amino terminus enables orthogonal deprotection and diversification.
  • High purity suitable for synthetic applications (about 99.5%).
  • Liquid form simplifies handling and dosing.
  • Recommended storage at -20°C to preserve stability.
  • Compatible with common coupling chemistries for conjugation workflows.

ENCOMPASS_PREFERRED
6

Medchemexpress LLC 3-[2-(2-{[(tert-butoxy)carbonyl]amino}ethoxy)ethoxy]propanoic acid | 1365655-91-9 | MFCD22056304 | 98.0% | 277.31 g·mol⁻¹ | C12H23NO6 | 10 G
SDP

Boc-NH-PEG2-CH2CH2COOH is a Boc-protected, amino-terminated PEG2 linker with a terminal carboxylic acid. It is intended for use as a short polyethylene glycol spacer in PROTAC synthesis and bioconjugation workflows, providing improved solubility and flexible connection between functional modules. Supplied with batch-specific quality documentation for reproducible synthesis outcomes.

  • Boc-protected amino-terminated PEG2 linker suitable for conjugation chemistry.
  • Short PEG spacer improves solubility and reduces steric hindrance.
  • Terminal carboxylic acid enables amide or ester coupling.
  • High purity (≥98%) with batch-specific certificate of analysis.
  • Available in multiple pack sizes, including 10 g for synthesis scale-up.

ENCOMPASS_PREFERRED