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Key Documents

922307

Sigma-Aldrich

Poly(lactide-alt-glycolide)

average Mn 10000, lactide:glycolide 50:50

Synonym(s):

PLLA-alt-PGA

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About This Item

Linear Formula:
(C5H6O4)n
UNSPSC Code:
12162002
NACRES:
NA.23

form

powder

Quality Level

feed ratio

lactide:glycolide 50:50

mol wt

average Mn 10000

color

white to beige

storage temp.

2-8°C

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Application

Poly(lactide-alt-glycolide) contains alternating sequence of lactide and clycolide in the polymer chain, unlike Poly(lactide-co-glycolide) (PLGA). The molar ratio of lactic to glycolic units in the polymer is exactly 1:1. Poly(lactide-alt-glycolide) has improved solutibilty in a broad range of organic solvents such as acetonitrile, acetone, dioxane, DCM and THF, providing great convenience for drug delivery researches and applications. Traditional PLGA polymers have a random distribution of glycolide and lactide units which impacts solutibilty. Compared to random PLGA with LA:GA ratios of 50/50, alternative PLGA undergoes hydrolysis in vivo with minimal changes in pH and a lower amount of acidic by-products.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Michael A Washington et al.
Acta biomaterialia, 65, 259-271 (2017-11-05)
Controlling the backbone architecture of poly(lactic-co-glycolic acid)s (PLGAs) is demonstrated to have a strong influence on the production and release of acidic degradation by-products in microparticle matrices. Previous efforts for controlling the internal and external accumulation of acidity for PLGA
Lin Yu et al.
Biomacromolecules, 12(4), 1290-1297 (2011-03-03)
This paper reports the influence of sequence structures of block copolymers composed of poly(lactic acid-co-glycolic acid) (PLGA) and poly(ethylene glycol) (PEG) on their thermogelling aqueous behaviors. A series of thermogelling PLGA-PEG-PLGA triblock copolymers with similar chemical compositions and block lengths

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