1,4-Benzenedicarbonyl chloride 1,4-Benzenedicarbonyl dichloride 100-20-9 NSC41885 Terephthalic acid chloride Terephthalic acid dichloride Terephthalic dichloride Terephthaloyl chloride Terephthaloyl dichloride Terephthalyl dichloride p-Phenylenedicarbonyl dichloride p-Phthaloyl chloride p-Phthaloyl dichloride p-Phthalyl dichloride