909289
Carboxylic acid-poly(ethylene glycol)-b-poly(D,L lactide)
PEG average Mn 5,000, PDLA average Mn 55,000
Synonym(s):
COOH-PEG-PDLA, COOH-PEG-PLA, Carboxylic acid PEG-PDLA, Carboxylic acid-PEG-PLA
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About This Item
Linear Formula:
HO(C3H4O2)m(C2H4O)nC2H3O2
UNSPSC Code:
12352106
NACRES:
NA.23
Recommended Products
form
powder or chunks
mol wt
PDLA average Mn 55,000 (by NMR)
PEG average Mn 5,000 (by NMR)
color
white to tan
storage temp.
−20°C
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Application
Carboxylic acid-poly(ethylene glycol)-b-poly(D,L lactide) is a functionalized, amphiphilic, diblock copolymer composed of a hydrophilic PEG block and a hydrophobic PLA block. These biodegradable, biocompatible polymers can self-assemble to form nanoparticles, such as micelles and polymersomes, in both aqueous and non-aqueous media. Due to these properties, these polymers are widely used in polymeric nanoparticle formulation to achieve controlled and targeted delivery of therapeutic agents (e.g. APIs, genetic material, peptides, vaccines, and antibiotics). The carboxylic acid functional group on the PEG chain enables rapid and facile surface functionalization, allowing for these materials to be used in applications such as targeted drug delivery.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Ren Zhong Xiao et al.
International journal of nanomedicine, 5, 1057-1065 (2010-12-21)
Due to their small particle size and large and modifiable surface, nanoparticles have unique advantages compared with other drug carriers. As a research focus in recent years, polyethylene glycol-polylactic acid (PEG-PLA) block copolymer and its end-group derivative nanoparticles can enhance
R Gref et al.
Science (New York, N.Y.), 263(5153), 1600-1603 (1994-03-18)
Injectable nanoparticulate carriers have important potential applications such as site-specific drug delivery or medical imaging. Conventional carriers, however, cannot generally be used because they are eliminated by the reticulo-endothelial system within seconds or minutes after intravenous injection. To address these
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