SF722 is not castor oil. That's like saying Doritos are corn, Splenda is sugar, etc.
Secondly, why are you freaking out about castor oil, it's considered safe in the recommended doses as a laxative. I almost bought some the other day. (Note: this does not speak to the safety of undenecyclic acid, the main ingredient in sf722. It seems to be poorly absorbed and the main utility for it is the digestive system. I'd test it on myself but I can't afford it.)
Hydrogen peroxide is one atom off (h2o2) from water (h2o) and has vastly different properties. The castor bean oil is cracked under pressure and I personally would not expect either to be effective in the others case.