138531-07-4

Pulmonary surfactant.

The Protect 21 peptide resin was transferred to a 2000 ml reactor, add the reagent (TFA/TIS=932 ml/68 ml) which was prepared beforehand and pre-cooled to about -10 to -7°C, and stirred at 13-16°C for 65 minutes. The solvent was removed to a small volume u