... Purified compounds were dissoved in 100 µL of N, N-dimethylformamide with addition of a little Tween 20 and then were sprayed using a laboratory belt sprayer delivering a 750 L/ha spray volume. ... Page 10. General Papers ARKIVOC 2010 (ii) 330-339 ... Coll., 1941; Vol. 1, 119. ...