You hear an awful lot about teamwork when you're in industry. (Personally, my fist clenches up whenever I here the phrase "team player", but perhaps that's just me.) But there's a bit of truth in all this talk, and it's something that you generally don't encounter during graduate training.
As a chemistry grad student, you're imbedded in a chemistry department, and most outside groups will either be irrelevant or there to service things for you. Getting along with people outside your immediate sphere is useful, but not so useful that everyone makes the effort. But pharmaceutical companies have a lot of different departments, and they're all pretty much equal, and they are all supposed to get along. You've got your med-chem, your pharmacology, the in vivo group (or groups, who may be stepping on each other's toes), metabolism, PK, toxicology, formulations. . .as a project matures, everybody gets dragged in.
These other folks do not see themselves, to put it mildly, as being put on earth to service the medicinal chemistry group. They are very good at detecting the scent of that attitude, and will adjust theirs accordingly. (Some of them already have filed chemists in the "necessary evil" category.) For the most part, no one is supposed to be able to pull rank on anyone else, so in order to get things done, you'll have to play nicely with others.
Not everyone figures this out. I watched someone once whose technique of speeding up the assay results for his compounds was to march down to the screening lab and demand to know where his procreating numbers were, already. No doubt he thought of himself as a hard-hitting, take-charge kind of guy, but the biologists thought of him, unsurprisingly, as a self-propelled cloaca. His assay submissions automatically got moved to the "think about it until next Tuesday" pile, naturally.
Earlier entries in the series can be found here.