Liu, Bao-yu published the artcileThe synthesis of camostat intermediate, Formula: C12H15NO4, the publication is Huaxue Shiji (2006), 28(6), 371-372, database is CAplus.
4-(2-(2-(Dimethylamino)-2-oxoethoxy)-2-oxoethyl)phenyl-4-aminobenzoate, the intermediate of camostat, was obtained at room temperature and normal pressure with dimethylamine as the starting materials through 4 reaction steps to reduce the nitro group with ammonium formate as the hydrogen donor and palladium as the catalyst. The structure has been confirmed by FT-IR and 1HNMR spectra.
Huaxue Shiji published new progress about 59721-16-3. 59721-16-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Phenol,Ester,Amide, name is 2-(Dimethylamino)-2-oxoethyl 2-(4-hydroxyphenyl)acetate, and the molecular formula is C12H15NO4, Formula: C12H15NO4.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics