--- title: "Heterocycles Template – Free Chemistry Diagram | MolDraw" url: https://www.moldraw.com/templates/library-heterocycles/ description: "Heterocycles template: 20 parent heterocycles: pyrrole, furan, thiophene, azoles, pyridine, diazines, indole, quinoline, purine. Preview it, then open and…" lang: en publisher: Scidart Academy generated: 2026-10-28 --- [MolDraw](https://www.moldraw.com/) › [Templates](https://www.moldraw.com/templates/) › [Organic](https://www.moldraw.com/templates/organic/) › Heterocycles [Organic](https://www.moldraw.com/templates/organic/)Free # Heterocycles template ![Heterocycles template: 20 parent heterocycles: pyrrole, furan, thiophene, azoles, pyridine, diazines, indole, quinoline, purine...](https://www.moldraw.com/templates/download/library-heterocycles.svg) [Edit in MolDraw](https://www.moldraw.com/)[Download SVG](https://www.moldraw.com/templates/download/library-heterocycles.svg) Free template. Download it, or open it in MolDraw to change it first. 20 parent heterocycles: pyrrole, furan, thiophene, azoles, pyridine, diazines, indole, quinoline, purine... ## What the template shows - Parent aromatic and saturated rings found in drugs and natural products - Five-membered - Six-membered Drawn with 127 atoms, 3 shapes – every one editable in MolDraw. ## Sources - [Clayden, Greeves & Warren, Organic Chemistry, 2nd ed., OUP 2012, ch. 29](https://openlibrary.org/isbn/9780199270293) Textbook - [PubChem: pyridine](https://pubchem.ncbi.nlm.nih.gov/compound/pyridine) Database - [PubChem: indole](https://pubchem.ncbi.nlm.nih.gov/compound/indole) Database ## How to use this template 1. Press **Edit in MolDraw**. The template opens on the canvas of the free MolDraw editor. 2. Change anything: move structures, edit atoms and labels, recolour highlights or delete what you do not need. 3. Add your own structures, arrows and text next to it, or combine several templates on one page. 4. Export the drawing as PNG, SVG or PDF for slides, worksheets, theses and papers. ## Frequently asked questions ### Is the Heterocycles template free? Yes. The Heterocycles template is one of the free MolDraw templates: open it in the editor or download it from this page as SVG or PNG and use it in your slides, worksheets and notes. ### Can I edit the Heterocycles template? Yes. It opens as an ordinary MolDraw drawing, so every structure, arrow, label and colour can be changed, and you can add your own content around it. ### Is the chemistry checked? Every structure is checked with RDKit and every curly arrow passes MolDraw’s electron-flow audit. The sources used are listed on this page. ### Which functional groups are included? Alkanes, alkenes, alkynes, arenes, alcohols, ethers, aldehydes, ketones, carboxylic acids and their derivatives, amines, nitriles and more, each with an example. ## More organic templates [**Functional groups**Free · Organic](https://www.moldraw.com/templates/library-functional-groups/)[**Isomerism**Free · Organic](https://www.moldraw.com/templates/library-isomerism/)[**Acidity: the pKa ladder**Premium · Organic](https://www.moldraw.com/templates/library-pka-ladder/)[**Directing groups in aromatic substitution**Premium · Organic](https://www.moldraw.com/templates/library-directing-groups/) ## Related pages [**Functional Groups Identification Worksheet**Free printable worksheet](https://www.moldraw.com/educational-materials/functional-groups-identification-worksheet/)[**Structural Isomers & Stereoisomers Worksheet**Free printable worksheet](https://www.moldraw.com/educational-materials/isomers-worksheet/)[**IUPAC Naming Worksheet**Free printable worksheet](https://www.moldraw.com/educational-materials/iupac-naming-worksheet/)[**All Organic templates**5 templates](https://www.moldraw.com/templates/organic/)[**All chemistry templates**370 templates in 29 categories](https://www.moldraw.com/templates/) MolDraw Pro Download all 370 templates - Export the 291 premium templates as PNG, SVG or PDF - AI chemistry assistant - Structure scanning from images - Cloud save and teaching slides [See Pro plans](https://www.moldraw.com/pricing) Free templates stay free. Every template can be opened and edited in MolDraw.