1,4-Naphthalenediol, 6-chloro-2,3-dimethoxy-, diacetate 6-Chloro-2,3-dimethoxy-1,4-naphthalenediol diacetate 91431-42-4 LONAPALENE Lonapalene [USAN] Lonapaleno [Spanish] Lonapalenum [Latin] RS 43179