A 2-alkoxyalkoxy-5-nitrobenzenesulfonic acid or a salt thereof represented by the following general formula (I): ##STR1## wherein R.sup.1 represents an alkylene group having 2 or more carbon atoms; R.sup.2 represents an alkyl group; and M represents an inorganic or organic cation. The compound represented by the general formula (I) is useful as an intermediate for a dye releasing redox compound which is suitable for use in the color diffusion transfer process.
2-烷氧基烷氧基-5-硝基
苯磺酸的或其盐,其由以下通式(I)表示:##STR1## 其中,R1代表具有2个或更多碳原子的烷基;R2代表烷基;M代表无机或有机阳离子。由通式(I)表示的化合物作为
染料释放氧化还原化合物的中间体很有用,该氧化还原化合物适用于彩色扩散转移过程。