Photoresist Chemicals L-Leucine, L-asparaginyl-L-lysyl-L-leucyl-L-lysyl-L-seryl-L-a-glutamyl-L-histidyl-L-alanyl -L-valyl-L-leucylglycyl-L-leucyl-L-a-aspartyl-L-asparaginyl- Cas:875756-31-3 Molecular Formula:C72H123N21O23