Photoresist Chemicals L-Phenylalanine, L-histidyl-L-seryl-L-seryl-L-arginyl-L-a-glutamyl-L-lysyl-L-a-glutamyl-L-alanyl -L-lysyl-L-arginyl-L-asparaginyl-L-arginyl-L-threonyl- Cas:595555-62-7 Molecular Formula:C72H120N28O23