# Stereoisomers of Hexachlorocyclohexane

What is the basis of naming the various isomers of hexachlorocyclohexane $\alpha$, $\beta$, $\gamma$, etc.? Here is a list of these isomers. Is it just random naming, or is it according to some convention?

• The $\unicode[Times]{x3B6}$, $\unicode[Times]{x3B7}$ and $\unicode[Times]{x3B8}$ isomers were synthesised last.
• $\unicode[Times]{x3B1}$, $\unicode[Times]{x3B2}$ $\unicode[Times]{x3B3}$ and $\unicode[Times]{x3B4}$ were characterised first by a guy called Teunis van der Linden, after whom the active insecticide $\unicode[Times]{x3B3}$-hexachlorocyclohexane was named lindane.
• Thereby concluding that $\unicode[Times]{x3B5}$ was discovered after $\unicode[Times]{x3B1}$ to $\unicode[Times]{x3B4}$.