HRID539415

反应详情

EQUATION

反应方程式

HRID 539415 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

PLGA polymer (MW 24,000, 160 mg) was dissolved in CH2Cl2 (1000 μL). Leuprolide acetate (40 mg) was dissolved in BnOH (1000 μL) and added to the polymer solution yielding a homogeneous organic phase. The resulting organic phase was combined with a 1% PVA aqueous phase to provide an emulsion. The emulsion was collected directly into a 0.3% PVA solvent extraction solution (150 mL) and stirred for four hours to extract EtOAc. Hardened microparticies were collected by filtration, washed with water, air dried and stored at 4° C. This provided formulation BI (140 mg, 70.0% yield) with a median particle size 50.1 μm. The core load (1.99%), encapsulation efficiency (9.95%) and in vitro burst (1.63%) were determined by RP-HPLC assay.

WORKUP

后处理

  1. additionadded to the polymer solution
  2. customyielding a homogeneous organic phase
  3. customto provide an emulsion
  4. customThe emulsion was collected directly into a 0.3% PVA solvent extraction solution (150 mL)
  5. extractionto extract EtOAc
  6. filtrationHardened microparticies were collected by filtration
  7. washwashed with water, air
  8. customdried
  9. customstored at 4° C