The chemical Neostigmine Bromide has a designated molecular formula of C12H19BrN2O2 and a molecular weight of 303.200 g/mol. Synonyms may include: Bromure de neostigmine [INN-French], Bromuro de neostigmina [INN-Spanish], Carbamic acid, dimethyl-, ester with (m-hydroxyphenyl)trimethylammonium bromide, 3-Dimethylcarbamoxyphenyl trimethyl ammonium bromide, EINECS 204-054-8, Eustigmin bromide, (m-Hydroxyphenyl)trimethylammonium bromide dimethylcarbamate, 3-Hydroxyphenyltrimethylammonium bromide dimethylcarbamic ester (ChemID). Neostigmine Bromide has been assigned a MeSH pharmacological action of: Cholinesterase Inhibitor.