A preprint is a version of a research manuscript published before peer review. Typically these documents and made freely available on large databases - preprint servers or repositories. Publishing a preprint aims to speed up the process of disseminating research, to generate a conversation around research and gain feedback from others.
Preprints have a number of benefits:
Introduced in 2017.
free service for disseminating and archiving unpublished preprints in chemistry
openly accessible, with no subscription fees for readers and no subscription charges for authors
It features over 3000 preprints from authors in 60 countries
Co-owned and collaboratively managed by ACS, RSC, German Chemical Society, Chinese CS, CS of Japan