Compound Q&A
What are the physical and chemical properties of Biotin-PEG2-C4-alkyne (CAS: 1011268-28-2)?
Answer
Biotin-PEG2-C4-alkyne (CAS: 1011268-28-2) is a biotinylated polyethylene glycol derivative with a C4 alkynyl group. It is typically a white to off-white powder with a molecular weight around 615 g/mol. This compound is poorly soluble in water but soluble in organic solvents such as DMSO and CHCl3. It is reactive due to the presence of the alkynyl group, which can undergo copper-catalyzed azide-alkyne click chemistry, making it useful for conjugation reactions.
About
CAS No
1011268-28-2
English Name
Biotin-PEG2-C4-alkyne
Molecular Formula
C22H36N4O5S
Molecular Weight
16.043 g/mol
SMILES
C#CCCCC(=O)NCCOCCOCCNC(=O)CCCC[C@@H]1SC[C@H]2[C@@H]1NC(=O)N2
InChIKey
VNWKTOKETHGBQD-UHFFFAOYSA-N
Last Updated: 2026-03-08 04:51