Enter a clue or pattern or both:
The Clue
Hydrocarbon derived from petroleum (6 letter answer)
The Answer
BUTENE
Tags
Notes
The answer BUTENE is so rare that it appears less than once every 2500 puzzles.
Related Clues
C4h8
Definition
BUTENE as a noun:
1. (butylene, butene) = any of three isomeric hydrocarbons C4H8; all used in making synthetic rubbers