(3,5-Dihydroxyphenyl)trimethylammonium bromide bis(dimethylcarbamate) (ester) 66941-37-5 AMMONIUM, (3,5-DIHYDROXYPHENYL)TRIMETHYL-, BROMIDE, BIS(DIMETHYLCARBAMATE) (este Ammonium, (3,5-dihydroxyphenyl)trimethyl-, bromide, bis(dimethylcarbamate) (ester) Ro 2-0708