Ipratropium Bromide Monohydrate standard

(1R,3r,5S,8r)-3-[[(2RS)-3-Hydroxy-2-phenylpropanoyl]oxy]-8-methyl-8-(1-methylethyl)-8- azoniabicyclo[3.2.1]octane Bromide Monohydrate; Ipratropium Bromide; (3-Endo,8-syn)-3-(3-Hydroxy-1-oxo-2-phenylpropyl)-8-methyl-8-(1-methylethyl)-8-azoniabicyclo[3.2.1]octane Bromide Monohydrate; 8-Azoniabicyclo[3.2.1]octane-3-(3-hydroxy-1-oxo-2-phenylpropoxy)-8-methyl-8-(1-methylethyl)-, bromide, monohydrate(endo,syn)-, (±)-; (8r )-3a-Hydroxy-8-isopropyl-1a h,5a h-tropanium bromide (±)-tropate monohydrate (USP);