Photoresist Chemicals L-Alanine, L-alanyl-L-lysyl-L-seryl-L-leucyl-L-lysyl-L-alanyl-L-valyl-L-tyrosyl-L-asparagin yl-L-phenylalanyl-L-alanyl-L-threonyl-L-methionyl- Cas:881677-47-0 Molecular Formula:C69H111N17O19S