719935

Resomer^® R 203 S, Poly(D,L-lactide)

ester terminated, M_w 18,000-28,000

• Synonym(s): Lactide polymer, PDLLA
• Linear Formula: [C₃H₄O₂]_x[C₂H₂O₂]_y
• CAS Number: 202832-99-3
• UNSPSC Code: 12162002
• NACRES: NA.23

Properties

• form: amorphous
• mol wt: M_w 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: T_g 46-50 °C
• storage temp.: 2-8°C
• 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

Description

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

RADIANT is a registered trademark of Bio-Rad Laboratories, Inc.

RESOMER is a registered trademark of Evonik Rohm GmbH

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable