2-Dimethylaminoethylazide
2-Dimethylaminoethylazide (DMAZ) is a liquid rocket fuel being investigated for use as a spacecraft propellent to replace the toxic, carcinogenic monomethylhydrazine. It is a member of the competitive impulse non-carcinogenic hypergol (CINCH) family which were assessed as a replacement for hydrazine-derived propellants.
Source: Wikipedia — 2-Dimethylaminoethylazide (CC BY-SA 4.0)