new - pyrrolyl - 3 - pyridazineamines having a further aminic substituent in the position 6 . the compounds are useful as antihypertensive agents and may be prepared from 6 - amino substituted - 3 - hydrazino pyridazines and β - dicarbonyl compounds . the use of the novel compounds as antihypertensives and compositions containing the novel compounds as active ingredients are also claimed .