Chemical Structural Formula:
Specifications of mPEG-DMG-2000:
| Test Items |
Specifications |
Test Methods |
| Appearance |
White powder-like solid |
Visual |
| Identification |
IR |
Complies with the reference substance structure |
IR |
| H-NMR |
Complies with the reference substance structure |
H-NMR |
| Average molecular weight |
2500±200 Da |
MALDI-TOF |
| Assay |
90.0% ~ 110.0% |
HPLC-CAD |
| Purity |
Not less than 95.0% |
HPLC-CAD |
| Polydispersity(Mw/Mn) |
Not more than 1.05 |
GPC |
| Impurities |
Myr-OH |
Not more than 1.00% |
HPLC |
| mPEG-LMG-2K(-28) |
Not more than 1.00% |
HPLC |
| mPEG-TMG-2K(-14) |
Not more than 1.00% |
HPLC |
| mPEG-IMG-2K(+14) |
Not more than 1.00% |
HPLC |
| mPEG-PMG-2K(+28) |
Not more than 1.00% |
HPLC |
| mPEG-MA-2K |
Not more than 1.00% |
HPLC |
| mPEG-MG-2K(β) |
Not more than 1.00% |
HPLC |
| mPEG-MG-2K(γ) |
Not more than 1.00% |
HPLC |
| Myr-EDU |
Not more than 1.00% |
HPLC |
| mPEG-DOH-2K |
Not more than 1.00% |
HPLC |
| TMG |
Not more than 1.00% |
HPLC |
| EDU |
Not more than 1000ppm |
HPLC |
| DMAP |
Not more than 1000ppm |
HPLC |
| DMG-PEG-DMG-4K |
Not more than 1.00% |
GPC |
| Residual Solvents |
Isopropanol |
Not more than 5000ppm |
GC |
| Dichloromethane |
Not more than 600ppm |
GC |
| n-Hexane |
Not more than 290ppm |
GC |
| Tetrahydrofuran |
Not more than 720ppm |
GC |
| Ethyl acetate |
Not more than 5000ppm |
GC |
| Toluene |
Not more than 890ppm |
GC |
| Elemental Impurities |
Copper(Cu) |
Not more than 30ppm |
ICP-MS |
| Arsenic(As) |
Not more than 1.5ppm |
ICP-MS |
| Chromium(Cr) |
Not more than 0.2ppm |
ICP-MS |
| Mercury(Hg) |
Not more than 0.3ppm |
ICP-MS |
| Lead(Pb) |
Not more than 0.5ppm |
ICP-MS |
| Cobalt(Co) |
Not more than 0.5ppm |
ICP-MS |
| Vanadium(V) |
Not more than 1.0ppm |
ICP-MS |
| Nickel(Ni) |
Not more than 2.0ppm |
ICP-MS |
| Lithium(Li) |
Not more than 25ppm |
ICP-MS |
| Antimony(Sb) |
Not more than 9ppm |
ICP-MS |
| Moisture |
Not more than 1.00% |
ChP<0832> |
| Bacteriological Data |
TAMC/g |
Not more than 100CFU/g |
ChP<1105> |
| TYMC/g |
Not more than 10CFU/g |
ChP<1105> |
| Endotoxin |
Not more than 0.015 EU/mg |
ChP<1143> |
Recommended Storage Conditions:
Kept at -20±5℃ under an inert atmosphere.
To reduce the moisture absorption, it should be slowly warmed to ambient temperature before opened.
Shelf Life:
24 months if stored under above conditions.
