butyric acid silicic acid-anhydride
4-nitrobenzaldehdye
butanoic acid anhydride
piperidine
ethylmalonic acid
α-ethyl-p-nitrocinnamic acid chloride
phenyl α-ethyl-(p-guanidinophenyl)propionate methanesulfonate
6-methyl-3-pyridyl α-ethyl-(p-guanidinophenyl)propionate methanesulfonate
6-methyl-3-pyridyl α-ethyl-p-guanidinocinnamate bis(methanesulfonate)
6-methyl-3-pyridyl α-ethyl-p-guanidinocinnamate methanesulfonate