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The detection of chiral compounds in the interstellar medium is a great challenge andcould tell us the connection between the chemistry of the ISM and the origin of life on the primitive Earth. Chiral C-3 sugar, $\alpha$-aminonitriles and cyanohydrins or the corresponding chloro-derivatives are intuitively the simplest chiral candidates consistent with the nature of the heteroatoms observed in the ISM. The aminoacetonitrile being observed in Sgr~B2(N)} {\textbf{482}}, 179-196 (2008)} but not the simplest cyanohydrins and chloacetonitrile, our study was devoted to the 2-aminopropanenitrile, the methyl derivative of aminoacetonitrile and the precursor of alanine (an amino acid) by hydrolysis. The measurements were made in Oslo and in Lille from 7 to 660 GHz. More than 2000 lines were assigned. The search in Sgr~B2(N) has been unsuccessful so far. The upper limit currently derived on the column density is comparable to the column density of aminoacetonitrile. {\textit {This~work~is~supported~by~the~french Programme National de Physique Chimie du Milieu Interstellaire}}