Using the Templates Database, you can add entire named structures quickly to the canvas. You can then add more fused rings if you wish, or use other structure editing tools to modify the rings as needed. Using the Cyclic Builder, you can quickly add cyclopentane, cyclohexane, and benzene rings right onto the canvas.

Using the Carbon Chain tool, you can quickly construct a hydrocarbon chain with as many carbons as you can fit in the canvas. These are the Carbon Chain tool, the Cyclic Builder, and the Molecular Templates. You can quickly build more complex structures by using additional tools available in the canvas. You can also add radicals and lone pairs using this tool. You can modify the charge as positive or negative by opening the drop down menu to the right of the charge icon. To modify the charge on any atom, use the Charge tool, as shown here. The bonds themselves can be modified with the bond line tool, shown here. You can also draw bonds between atoms with this tool. You can select from any element on the periodic table, as shown below. To change the element selected, open the drop down by clicking the arrow on the right. Any atom of any element can be placed on the canvas with this tool. You can draw a structure atom by atom using the Point-Drawing tool. You can use it to draw bond-line representations of molecules and molecular reactions.

Chemdoodle sketcher