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Merck
CN

719935

Resomer® R 203 S, Poly(D,L-lactide)

ester terminated, Mw 18,000-28,000

Synonym(s):

Lactide polymer, PDLLA

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About This Item

Linear Formula:
[C3H4O2]x[C2H2O2]y
CAS Number:
202832-99-3
MDL number:
MFCD00217751
UNSPSC Code:
12162002
NACRES:
NA.23

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SMILES string

[H]OC(C(OC(C(O[R])=O)C)=O)C

InChI

1S/C6H8O4.C4H4O4/c1-3-5(7)10-4(2)6(8)9-3;5-3-1-7-4(6)2-8-3/h3-4H,1-2H3;1-2H2

InChI key

LCSKNASZPVZHEG-UHFFFAOYSA-N

form

amorphous

mol wt

Mw 18,000-28,000

degradation timeframe

<6 months

viscosity

0.25-0.35 dL/g, 0.1 % (w/v) in chloroform(25 °C, Ubbelohde) (size 0c glass capillary viscometer)

transition temp

Tg 46-50 °C

storage temp.

2-8°C

Quality Level

200

Related Categories

General description

Ester terminated Poly(D,L-lactide) (PDLLA, RESOMER® ) is a copolymer of L and D-lactic acid and (or L and D lactide). The structure is highly irregular and amorphous. RESOMER® polymers are bioresorbable aliphatic polyesters comprised of a range of different ratios of lactide and glycolide monomers, PLA stereochemistries, and end-group functionalization.

Application

This biodegradable polyester is useful for the controlled release of drugs both in vitro and in vivo.

Legal Information

Product of Evonik
RESOMER is a registered trademark of Evonik Rohm GmbH

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCH6492
MKCV7441
BCCD0968
BCCB8258
BCBW5330

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Auras RA, et al.
Poly(lactic acid): Synthesis, Structures, Properties, Processing, and Application null
Biodegradable polyesters for controlled release of trypanocidal drugs: in vitro and in vivo studies.
Lemmouchi Y, et al.
Biomaterials, 19(20), 1827-1837 (1998)

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