14 chemistry PNG images with transparent background
Skeletal formulas from a simple toluene ring to a macrocyclic drug, fused heterocycles with nitrogen and oxygen, a ball-and-stick model and two reaction schemes with intermediates.
- Images
- 14
- Sizes
- 601 to 3 920 px
- Formats
- PNG with alpha, WebP, JPG
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- free, no sign-up
Subtopics
Filters
Molecule Chemistry Anthracene Chemical PNG
Organic acid anhydride Simple aromatic ring PNG
Mercaptopurine Simple aromatic ring PNG
Aromaticity Simple aromatic ring Pyridine PNG
Isoquinoline Naphthalene Aromaticity Simple PNG
Aryne Chlorobenzene Aniline Chemistry PNG
Aniline Skeletal formula Molecule PNG
Hepatitis C virus Grazoprevir Chemical PNG
Quinoline Ether Chemical compound Chemistry PNG
Acridine Chemical structure Simple aromatic PNG
Stacking Organic chemistry Benzene Pi bond PNG
Lactam Aromaticity Indole Heterocyclic PNG
Chemistry Chemical compound Curcumin PNG
Estrogen receptor Aromaticity Chemical PNG
From textbook basics to research
The benzene ring with a methyl branch and the five-membered nitrogen ring are first-year material, suited to a quiz or a handout. The macrocycle with a sulfonamide tail and the long quinolinone drug belong in a pharmacology lecture or a research poster.
Reactions, not just molecules
Two images show chemistry in motion: a left-to-right scheme with bracketed intermediates and a note on the mirror plane, and a pair of labelled reactions from aromatic rings to their products. They explain a mechanism rather than name a compound.
Line drawing or model
Everything except one image is a flat line formula. The ball-and-stick model with a red oxygen atom is the only three-dimensional view — the natural choice for a banner where formulas would look dry.
Questions and answers
Is the transparency real or a painted checkerboard?
Real. We parse the PNG structure and keep only files with an alpha channel; anything with a painted-in background has been removed.
Are there large files for print?
Originals range from 601 to 3 920 pixels. On download you can shrink to 64–1024 px; enlarging beyond the original is not offered.
Do I need to register to download?
No registration. The only limit is a few dozen files per minute per address, so the catalogue cannot be bulk-scraped.
Can I use chemistry 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.