So try it for yourself. Which compound is wrong? (*I* don’t know yet) How would you find out? Maybe you would go to Chemical Abstracts (ACS). Last time I looked it cost 6USD to look up a compound. That’s 50 dollars, just to check whether the literature is right. And you would be forbidden from publishing what you found there (ACS sent the lawyers to Wikipedia for publishing CAS registry numbers). What about Elsevier’s Reaxys? Almost certainly as bad.