PolySciTech (www.polyscitech.com) provides a wide array of PEG-PLA polymers. Recently this type of polymer was utilized to generate nanoparticles encapsulating DAAN15h. a potent reverse transcriptase inhibitor, to improve blood circulation time and reduce elimination. Read more: Li, Wen, Qian Wang, Yuan Li, Fei Yu, Qi Liu, Bingjie Qin, Lan Xie, Lu Lu, and Shibo Jiang. "A Nanoparticle-Encapsulated Non-Nucleoside Reverse-Transcriptase Inhibitor with Enhanced Anti-HIV-1 Activity and Prolonged Circulation Time in Plasma." Current pharmaceutical design 21, no. 7 (2015): 925-935.