Synthetic LTE spectrum of CH₃CSNH₂ (in red) used to derive the upper limit to its column density, overlaid on the ALMA spectrum of Sgr B2(N2) (in black) and the synthetic spectrum that contains the contributions of all the species (but not CH₃CSNH₂) that we have identified so far in this source (in green). The dotted line in each panel indicates the 3σ noise level. The transitions of CH₃CSNH₂ that have a modeled peak temperature lower than 3σ and the ones that are heavily contaminated by other species are not shown.