Investigating the asymmetric chemistry in the disk around the young star HD 142527

The atmospheric composition of planets is determined by the chemistry disks in which they form. Studying gas-phase molecular thus allows us to infer what forming might be. Recent observations IRS 48 disk have shown that (asymmetric) dust traps can directly impact observable chemistry, through radial and vertical transport, sublimation ices. asymmetric HD 142527 provides another good opportunity investigate role setting disk's chemical composition. In this work, we use archival ALMA obtain an as large possible inventory, influence trap on chemistry. We present first detections [C I], 13C18O, DCO+, H2CO additional transition HCO+ CS disk. addition, acquired upper limits for non-detected species such SO CH3OH. For majority observed molecules, a decrement emission at location found. main CO isotopologues continuum over-subtraction likely causes asymmetry, while HCN propose asymmetries are due shadows cast misaligned inner As molecules not co-spatial with no or CH3OH found, thermal icy mantles does appear play major changing outer Using our 13C18O DCO+ RADMC-3D model, determine snowline be located beyond traps, favouring cold formation H2CO, rather than hydrogenation CO-ice subsequent sublimation.