A textual representation of the molecular structure showing atom groups in sequence.
The simplest whole-number ratio of atoms of each element present in a compound.
A generalized formula using variables (e.g., R-groups) to represent a class of compounds.
A standard system for ordering elements (C first, then H, then alphabetical).
The actual number of atoms of each element in a single molecule of a substance.
A simplified structural formula where carbon atoms and C-H bonds are represented by vertices.
A graphic representation showing the spatial arrangement of atoms and chemical bonds.
Standard formats for representing the elemental composition and structure of molecules.