# Unique calling code for a chemical reaction

I'm writing a script and would like to use a "Gödel numbering" to search for specific reactions.

Is there any used procedure to assign an symbol (integer, possibly) to a chemical reaction? E.g. $$CH_4+4O_2=CO_2+2H_2O\ \ \ \Longrightarrow \ \ \ 121231412$$

• To clarify, do you require reactions that are similar in some sense to generate similar numbers? – Richard Terrett Mar 8 '13 at 4:30
• @RichardTerrett: Would be a feature, but isn't necessary. I don't expect the numbers/symbols to be accessible to a human. – Nikolaj-K Mar 8 '13 at 8:07