Photoresist Chemicals L-Valine, L-leucyl-L-histidyl-L-glutaminyl-L-tryptophyl-L-leucyl-L-a-glutamyl-L-threonyl -L-arginyl-L-prolyl-L-asparaginyl-L-arginyl-L-glutaminyl- Cas:820234-78-4 Molecular Formula:C74H117N25O20