METHOXYCHLORS is a 13 letter Scrabble word worth 33 points.
an organochlorine insecticide of similar chemical structure to ddt, but with lower toxicity and persistence in the environment; 1,1,1-trichloro-2,2-bis(p -methoxyphenyl)ethane, (c₆ h₄ och₃)₂ chccl₃.