Photoresist Chemicals L-Tryptophan, L-lysyl-L-glutaminyl-L-arginyl-L-arginyl-L-prolyl-L-glutaminylglycyl-L-leucyl-L- prolyl-L-asparaginyl-L-asparaginyl-L-threonyl-L-alanyl-L-seryl- Cas:924290-73-3 Molecular Formula:C75H121N27O22