Aedans Cystenyl C MOD:01138 OBSOLETE because no evidence has been seen for this protein modification. modification from DeltaMass PSI-MOD [probably aminoethyldansyl, JSG] From DeltaMass: (name misspelled "Aedans Cystenyl", and formula incorrect, N and O reversed) Average Mass: 409 Abbreviation: Aedans-Cys Formula: C17H19O3N5S2 Monoisotopic Mass Change: 409.077 Average Mass Change: 409.482 artifact true