3-(4-dimethylamino-phenyl)-5-oxo-pyrazolidine-4-carboxylic acid ethyl ester

N-[4-Dimethylamino-benzyliden]-4-rhodan-anilin

4-N,N-dimethylaminobenzaldehyde hydrazone

2-(2-(4-(dimethylamino)benzylidene)hydrazinyl)ethyl hydrogen sulfate

乙醇