Amino-PEG2-acid

CAS NO.：791028-27-8
Empirical Formula: C7H15NO4
Molecular Weight: 177.2
MDL number: MFCD20926377
Update Date: 2025-11-18 14:22:45

What is Amino-PEG2-acid?

Description

Amino-PEG2-acid is a PEG reagent containing an amino group with a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The amino group is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to form a stable amide bond.

Biological Activity

Amino-PEG2-C2-acid is a cleavable 3-unit PEG ADClinker for the synthesis of antibody-drug conjugated Ck (ADC). It is also a PEG-based PROTAClinker that can be used for PROTAC synthesis.

in vivo

ADCs are comprised of an antibody to which is attached an ADC cytotoxin through an ADC linker. PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein. PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.

Properties of Amino-PEG2-acid

Boiling point:	331.5±27.0 °C(Predicted)
Density	1.142±0.06 g/cm3(Predicted)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
pka	4.27±0.10(Predicted)
form	Solid
color	White to off-white

Safety information for Amino-PEG2-acid

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.