Photoresist Chemicals L-Valine, L-alanyl-L-alanyl-L-a-glutamyl-L-arginyl-L-lysyl-L-histidyl-L-arginyl-L-histidyl- L-leucyl-L-prolyl-L-valyl-L-alanyl-L-a-aspartyl-L-alanyl- Cas:594830-01-0 Molecular Formula:C72H120N26O20