Indian Journal of Chemistry
Vol. 46A, February 2007, pp. 247-251
Synthesis, spectral studies, thermal decomposition kinetics, reactivity and antibacterial activity of some lanthanide(III) nitrate complexes of 2-(N-indole-2-one)amino-3-carboxyethyl-4,5,6,7-tetrahydrobenzothiophene
M Thankamony & K Mohanan*
Но етсь у них какой-то такой код:
IPC Code: Int. Cl.8 C07F17/00
Может сгодится?