One man's deet, a mosquito's poison

It got above 90 degrees in Dallas yesterday; I'm not kidding.

That, and a release from the CDC on how to ward off mosquitoes, reminded me that it's about time to send out this warning:

Deet, "a colorless oily liquid insect repellent C₁₂H₁₇NO," is thought to have come from d.e.t, "di- + ethyl + toluamide (C₈H₉NO)."

Or maybe it was from d.t., for diethyl toluamide.

But I don't see anyone saying it's from d.e.e.t. There's no need to cap it. (Not to mention the fact that the dictionaries I've looked at have all listed lowercase deet first, with maybe a mention of "often capped." )