CRYSTALLOGRAPHY

On the crystal- and molecular structure of photochromic spiropyran, $\mathrm{C}_{23}\mathrm{H}_{19}\mathrm{NO}_3$

K. Sh. Karaev, N. G. Furmanova, N. V. Belov

Institute of Cristallography of the USSR Academy of Sciences, Moscow

UDC: 548.737

Received: 20.03.1980