Decomposition reaction for theophylline, hexobarbital natrium

[Korybut]

TL;DR

Storage of medications

Hello!

There is a problem to write chemical reactions that goes with substances if they are not stored properly. For example theophylline should be saved from light and though I am trying to find its’ reaction with hv(light) but failed.

Please help with some good reference

Many thanks in advance

 

[Borek]

Generally speaking there is rarely a single reaction, typically decomposition is a bit random and takes many paths (some can dominate).