2184-77-2 4-(Dimethylamino)-3,5-dimethylphenyl acetylmethylcarbamate AI3-27263 BRN 2816522 Carbamic acid, acetylmethyl-, 4-(dimethylamino)-3,5-dimethylphenyl ester Carbamic acid, acetylmethyl-, 4-(dimethylamino)-3,5-xylyl ester ENT 27,263 N-Acetylzectran U-20493 Upjohn U-20493