How many letters does the top answer for “the univalent radical ch3- derived from methane” have?

The most common answer is methyl (6 letters).

Crossword clue: the univalent radical ch3- derived from methane

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

methyl 6 letters wn-def

the univalent radical CH3- derived from methane

the bivalent radical ch2 derived from methane 60% similar → methylene

the univalent radical derived from toluene 60% similar → benzyl