8-Arm PEG-GA, MW 40k

8-Arm PEG-GA, MW 40k

Catalog No:PSB-839
Product Name:8-Arm PEG-GA, MW 40k
In Stock: Yes
SKUProduct Name
PSB-839-1g
8-Arm PEG-GA, MW 40k - 1g
$300.00
-
+
PSB-839-5g
8-Arm PEG-GA, MW 40k - 5g
$900.00
-
+
PSB-839-10g
8-Arm PEG-GA, MW 40k - 10g
$1,350.00
-
+
Interested in Bulk Orders? Please contact us here

Description

8-Arm PEG-GA is a multiarmed PEG derivative with carboxylic acid at each terminal of the eight arms connected to one hexaglycerol core. GA stands for glutamic acid. There is a C4 ester linkage between PEG and COOH. The ester linkage may be useful in reversible pegylation design. PEG acid can be used to react with amine groups with peptide coupling reagents.

Differences in PEG acid we offer:

PEG acidsStructural characteristics
Type A: AAMethylene (CH2) linkage between PEG and acid (COOH)
Type B: GAC4 aliphatic ester linkage between PEG and acid (COOH)
Type C: SAC3 aliphatic ester linkage between PEG and acid (COOH)
Type D: GAAC4 aliphatic amide linkage between PEG and acid (COOH)
Type E: SAAC3 aliphatic amide linkage between PEG and acid (COOH)
AA: Acetic Acid, also called CM - Carboxyl Methyl; GA: Glutaric Acid; SA: Succinic Acid; GAA: GlutarAmide Acid; SAS: SuccinAmide Acid

Properties

Molecular weight: 8-Arm PEG MW refers to the MW of the entire PEG molecule. The MW of each arm is 1/8 of the MW indicated in the product name. MW of PEG was measured by MALDI-MS or GPC. PDI (polydispersity index) of our 8-Arm PEG is 1.02-1.06 with very narrow MW distribution. The number of repeating ethylene oxide units (CH2CH2O) or the degree of polymerization is calculated dividing the PEG MW by 44 (44 is the molecular mass of one repeating unit).

Solubility: Soluble in water and aqueous buffer, chloroform, methylene chloride, DMF, DMSO, and less soluble in alcohol, toluene. Not soluble in ether.

Density: PEG density is approximately 1.125 g/mL

Physical form: PEG products generally appear as white or off-white powder, and for certain special 8-arm PEGs, it may appear as wax-like, semi-solid material due to low MW and the type of functional groups.

Storage condition: PEG product shall be stored in the original form as received in a freezer at -20C or lower for long term storage. Stock solution of PEG reagents that do not contain oxygen or moisture sensitive functional groups may be temporarily stored in a refrigerator or ambient temperature for multiple days. Stock solution should avoid repeated freeze-and-thaw cycles. See Documents section for detailed storage and handling conditions.

References

Click here to view an expanded list of hundreds of publications citing Creative PEGWorks products.

Documents

 Technical Information_8-Arm PEG Products
 SDS of 8-Arm PEG-GA

Get In Touch

If you have any questions, please submit an online inquiry.

Your Name*
Do you wish to receive emails for new product introduction and sale promotions?
By submitting this form, you are consenting to our privacy policy.
This field is for validation purposes and should be left unchanged.