4-Propargylthiomorpholine 1,1-dioxide10442-03-2100 % similar N-Propargylmorpholine5799-76-846 % similar 2-Propyn-1-amine, N,N-diethyl-, radical ion(1+)125678-52-639 % similar Diethylpropargylamine4079-68-939 % similar N,N-Dimethylpropargylamine7223-38-332 % similar Sulfolane126-33-032 % similar