[en] Cross sections of a prospective medical radionuclide ${}^{117m}$Sn along with ${}^{113}$Sn, ${}^{120m,122}$Sb, ${}^{111,114m}$In and ${}^{118,119m,119g,121m,121g,123m}$Te generated in natural and enriched antimony targets by protons in a wide energy range up to 145 MeV were determined. A stacked-foil technique followed by gas chemical separation and γ-ray spectrometry were used. The obtained data were compared with experimental values reported in literature and with theoretical computations by ALICE, TALYS and Cascade-Evaporation-Fission codes. Production yields of ${}^{117m}$Sn and the main impurity ${}^{113}$Sn were estimated for different irradiation modes.