Preparation of 2,3‐dinitrilo‐1,4‐dithia‐9,10‐anthraquinone labelled with ¹⁴C or ³⁵S or ¹⁴C+³⁵S

Abstract

A method w a s developed f o r the preparation of 2,3-dinitrilo--1,4-dithia-g,lO-anthraquinone labelled with uC or 35S o r 14C+35S on a milligram scale with the use of the semiconductographic detection. The exchange of the 35S radionuclide in various stages of the preparation w a s examined in detail. By the present method, the following activities were obtained: 88 C i of 14C/mol o r 44 C i of 35S/m01 or 1.46 C i of uC + 75 C i of 35S/m01. + Present a d d r e s s : Inspekta, P r a g u e , Czechoslovakia ++ Indonesian visitor, the r e s u l t s partly included in Dipl. Thesis C h a r