Filed from 2 published puzzles

METHYL

Set to 2 different clues across 2 published puzzles, most often “CH3” — The New York Times, Thursday, 29 January 2004.

6 letters

Every clue on record, most used first

  • CH3once

    The New York Times — Thursday, 29 January 2004

  • CH3 (chemical)once

    The New York Times — Sunday, 3 March 1996