PG5 (molecule)

PG5 is the largest stable synthetic molecule ever made. PG5 was designed by the organic chemistry research group working at the Federal Institute of Technology in Zürich.

Properties
PG5 has a molecular mass of about 200 MDa or 200,000,000 g/mol. It has roughly 20 million atoms and a diameter of roughly 10 nm. Its length is up to a few micrometers. It is similar in size to a tobacco mosaic virus with comparable length and diameter. PG5 was shown to be resistant against attempts to flatten its structure.