It doesn't look like Ketamine to me or at least any K that I've ever seen, Ketamine has no color or odor to it when in it's pure crystalline form. The only way to be certain is to buy a testing kit online. I cannot account for the pink color which makes me very suspicious indeed!
In my search to find more about ketamine analogues I came across this thread, I can't find these on Google but interested to know more, not that I can get any but I like to read stuff about weird drugs like this