Transparent molecule images in PNG
Structures of organic compounds: a ball-and-stick model with black carbons and white hydrogens, a bare benzene ring with a methyl group, a chromene, an acridine with its nitrogen and a larger drug-like molecule with a pyrrolidine tail.
- Images
- 5
- Sizes
- 601 to 1 920 px
- Formats
- PNG with alpha, WebP, JPG
- Download
- free, no sign-up
Subtopics
Filters
Molecule Chemistry Anthracene Chemical PNG
Aniline Skeletal formula Molecule PNG
Quinoline Ether Chemical compound Chemistry PNG
Acridine Chemical structure Simple aromatic PNG
Estrogen receptor Aromaticity Chemical PNG
Two ways of drawing
One picture is a 3D ball-and-stick model; the rest are skeletal formulas, the flat notation chemists write on paper. For a school poster the model is more intuitive; for a lecture or a paper the line formulas are what readers expect.
Reading the formulas
In skeletal drawings each corner is a carbon atom and hydrogens are left out. Letters appear only for other elements — N for nitrogen, O for oxygen — so the formulas stay clean even when the molecule is large.
Using them outside chemistry
Hexagon rings are a popular decorative shorthand for science, pharmacy and cosmetics. If you use them as decoration, pick the simplest ring so that chemists in your audience are not distracted by a real but irrelevant structure.
Questions and answers
Is the transparency real or a painted checkerboard?
All 5 images carry a real alpha channel. On the image page you can switch the backdrop to white or dark to see the edges.
Are there large files for print?
The largest files in this set reach 1 920 px. For print choose 2000 px and up in PNG; for the web 500–800 px in WebP.
Do I need to register to download?
No sign-up needed. The file is served after a short wait on the download page.
Can I use molecule images commercially?
The catalogue gathers images from open sources. Before commercial use confirm the rights with the author — the source link is on the image page.