Photoresist Chemicals L-Aspartic acid, L-lysyl-L-threonyl-L-a-aspartyl-L-tryptophyl-L-phenylalanyl-L-arginyl-L-valyl- L-leucyl-L-methionyl-L-threonyl-L-phenylalanyl-L-leucyl-L-methionyl- Cas:678998-47-5 Molecular Formula:C84H127N19O21S2