28821-35-4 Usage
Description
PEG16 is a polymeric structure consisting of ethylene glycol units and two terminal hydroxyl groups. The hydroxyl group can react to further derivatize the compound. The hydrophilic PEG linkers increase the water solubility of the compound in aqueous media. The water solubility properties of the PEG linker are enhanced with longer PEG chains.
Check Digit Verification of cas no
The CAS Registry Mumber 28821-35-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,8,2 and 1 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 28821-35:
(7*2)+(6*8)+(5*8)+(4*2)+(3*1)+(2*3)+(1*5)=124
124 % 10 = 4
So 28821-35-4 is a valid CAS Registry Number.
InChI:InChI=1/C30H62O16/c31-1-3-33-5-7-35-9-11-37-13-15-39-17-19-41-21-23-43-25-27-45-29-30-46-28-26-44-24-22-42-20-18-40-16-14-38-12-10-36-8-6-34-4-2-32/h31-32H,1-30H2
28821-35-4Relevant articles and documents
High-purity discrete PEG-oligomer crystals allow structural insight
French, Alister C.,Thompson, Amber L.,Davis, Benjamin G.
supporting information; experimental part, p. 1248 - 1252 (2009/06/30)
To great (monodisperse) lengths: An improved synthesis of purer ethylene glycol (EG) oligomers allows access to 16- and 32-mers pure enough for multiple incorporation, and also to the longest (48-mer) discrete EG oligomer yet reported. The high purity enables the first crystallizations and hence the first glimpses of secondary 310-helical PEG structures.
