Basically I am asking "What is commonly found in urine?". :p
I wouldn't use urine as compost, to high of an acid content. make compost out of decomposed food scraps! :)
Excess vitamins, sodium, ammonium, uric acid, ummm thats all I know off the top of my head haha.
Would it make for good compost? :p as I would like to know the effects on my lawn. haha