Tracing the G331.512-0.103 hot core with CH3CN and CH3OH

N- and O-bearing molecules trace different physical conditions in hot cores. We observed the G331.512+0.103 hot core with the APEX antenna to study the emission from CH3CN and CH3OH bulks (N. Duronea contribution). All the lines of CH3CN and CH3OH were identified covering the levels Eup=(150-500)K and Eup=(50-400)K, respectively. Radiative analysis indicate rotational temperatures around 100 and 180 K for CH3OH and CH3CN, respectively, as well as that [CH3OH]/[CH3CN]~20. Such hints indicate a rich chemistry activated by thermal processes on the grain surfaces of the G331.512+0.103 hot core. Note: Altogether with the N. Duronea's contribution. This abstract is presented in collaboration with his work mentioning observations with the APEX observatory.