As part of a program designed to synthesize derivatives of azo and hydrazo aliphatic acids of the general formulas R (CH~), X= N (CHZ),-CO? H and R (CHZ)~ NHNH (CH~) &O: H as possible anticancer agents, it appeared to be of interest to investigate esters of azoformic acid. The latter, which would be represented by the case where y= 0 in the first general formula, should be obtainable from alkylidene carbazates, which result from t, he ...