Файл:Chem template.pngFile:Chem template.svg is a vector version of this file. It should be used in place of this PNG file. File:Chem template.png → File:Chem template.svg For
Файл:Trimethyl steroid-nomenclature.pngnomenclature Author, date of creation: selfmade by Shaddack, 21 October 2005 Source: self-made Copyright: Public Domain (PD) Comments: hires color PNG; ChemDraw