ALKYL

Yes. "ALKYL" is in the ENABLE word list, accepted by Words With Friends and most open Scrabble apps. It scores 12 points in Scrabble and 13 points in Words With Friends.

In Scrabble, "ALKYL" is worth 12 points before bonuses. In Words With Friends, it's worth 13 points. Played on a triple-word-score, the Scrabble value becomes 36.

Any of a series of univalent radicals of the general formula CnH2n+1 derived from aliphatic hydrocarbons.

No, "ALKYL" has no anagrams in the ENABLE dictionary — it's the only word that can be formed from its exact letters.